2022 CMS Winter Meeting

Toronto, December 2 - 5, 2022

# Scientific Sessions

Please note that all times are displayed in Eastern Standard Time (EST).

 Advances in Finite Elements & Application to Solid and Fluid Mechanics Org: Javier Almonacid and Nilima Nigam (SFU) "The finite element method continues to be of great importance in the numeriical solution of partial differential equations. lncreasingly complex applications in areas such as cardiac and muscle mechanics, visooelastic materials, fluid-structure interaction, and magnetohydrodynamics (to name a few) have led to new and important results in the study of this numerical method. ln this sessiion, we will invite researchers from diverse areas to present their latest advances on finite elements and applications lo problems in continuum mechanics. Talks can range from theoretical aspects of the finite element method to applications of already-known finite elements in fluid and solid medhanics." Saturday December 3  (Wren C) 14:30 - 15:00 Lilia Krivodonova (University of Waterloo), Stabilization techniques for solution of hyperbolic conservation laws on unstructured nonconforming meshes 15:00 - 15:30 Jose Pablo Lucero Lorca (University of Colorado Boulder), Nonoverlapping Schwarz Preconditioners in linear and nonlinear settings applied to radiation transport problems. 16:00 - 16:30 Keegan Kirk (Rice University), Convergence analysis of a pressure-robust space-time HDG method for incompressible flows 16:30 - 17:00 Conor McCoid (Université Laval), Robust algorithm for the intersection of simplices 17:00 - 17:30 Sebastian Dominguez Rivera (Siemens), Eigenvalues in linear elasticity: theory and approximation 17:30 - 18:00 Nicolas Doyon (Université Laval), Finite element implementation of Poisson Nernst Planck equations in models of neural structures 18:00 - 18:30 Javier Almonacid (Simon Fraser University), Finite-element discretization of a 3D hyperelastic model of skeletal muscle Algebraic and Spectral Graph Theory Org: Jane Breen (Ontario Tech), Sooyeong Kim (York), Hermie Monterde (Manitoba) and Xiaohong Zhang (Waterloo) "The interplay of graphs and matrices is long-established in the fields of algebraic graph theory, spectral graph theory, and combinatorial matrix theory. In algebraic graph theory, properties of a graph are determined by studying features of an associated algebraic structure; in spectral graph theory, a graph is represented by a matrix and studied via its eigenvalues; in contrast, in combinatorial matrix theory, properties of a matrix are determined from its combinatorial structure - that is, by studying properties of an associated graph. Techniques from all three fields have a wide range of applications, from quantum computing, to network science, to dynamical systems. Furthermore, research in these fields has long been prevalent in Canada, with strong collaborations among mathematicians across the country, and between these fields too. " Saturday December 3 14:30 - 15:00 Luc Vinet (Université de Montreal), Bivariate $P$-polynomial association schemes 15:00 - 15:30 Sabrina Lato (University of Waterloo), Characterizations of Distance-Biregular Graphs and Related Problems 16:00 - 16:30 Gabor Lippner (Northeastern University), Pretty Good Fractional Revival via diagonal perturbation 16:30 - 17:00 Yujia Shi (Northeastern University), Achieving strong state transfer using a bounded potential 17:00 - 17:30 Weichen Xie (Clarkson University), Breaking the Perfect State Transfer Speed Limit 17:30 - 18:00 Paula Kimmerling (Washington State University), Rank of Average Mixing Matrix in Dutch Windmill Graphs, Whistler Sunday December 4 8:00 - 8:30 Shaun Fallat (University of Regina), Revisiting the Parter-Wiener Theorem, Whistler 8:30 - 9:00 Prateek Vishwakarma Kumar (University of Regina), The Gantmacher--Krein determinantal inequalities via planar networks, Whistler 9:00 - 9:30 Steve Butler (Iowa State University), Complements of coalescing sets, Whistler 9:30 - 10:00 Harmony Zhan (Simon Fraser University), The second largest eigenvalue of a tree, Whistler 10:00 - 10:30 Mark Kempton (Brigham Young University), Isospectral Reductions and Quantum Walks, Whistler 15:30 - 16:00 Steve Kirkland (University of Manitoba), Kemeny's constant for an undirected graph: how much can adding one edge change things? 16:00 - 16:30 Michael Cavers (University of Toronto Scarborough), Spectra of sign patterns 16:30 - 17:00 Seyed Ahmad Mojallal (University of Regina), Distribution of Laplacian eigenvalues of graphs 17:00 - 17:30 Lord Kavi (University of Ottawa), $3$-independence number of graphs 17:30 - 18:00 Mahsa Shirazi (University of Manitoba), Graphs with $r$-friendship property Monday December 5 8:00 - 8:30 Chris Godsil (University of Waterloo), State transfer on big graphs, Whistler 8:30 - 9:00 Christopher van Bommel (University of Manitoba), Perfect State Transfer on Trees with Small Diameter, Whistler 9:00 - 9:30 Wanting Sun (University of Waterloo), Perfect Laplacian state transfer in graphs, Whistler 9:30 - 10:00 Hermie Monterde (University of Manitoba), Fractional revival between twin vertices, Whistler 10:00 - 10:30 Qiuting Chen (University of Waterloo), Bipartite walks are better than Grover's walk, Whistler 15:00 - 15:30 Robert F. Bailey (Memorial University), Cataloguing strongly regular graphs with primitive automorphism groups 15:30 - 16:00 Maxwell Levit (University of Waterloo), Covers of Graphs from Extensions of Groups 16:00 - 16:30 Mariia Sobchuk (University of Waterloo), Quantum isomorphisms 16:30 - 17:00 Xiaohong Zhang (Université de Montreal), Constructing cospectral graphs, Whistler Algebraic Combinatorics and Representation Theory Org: Nantel Bergeron and Mike Zabrocki (York) This session will focus on applications of combinatorics to algebraic structures and representation theory. Algebra is discrete by nature and describing structures such as bases and linear operations using combinatorial objects (e.g. sets, partitions, paths, etc.) is important for understanding basic properties. Saturday December 3  (Wren B) 9:00 - 9:30 Kelvin Chan (York University), Recent progress on super harmonics 9:30 - 10:00 Anthony Lazzeroni (Hong Kong Baptist University), Powersum Bases in Quasisymmetric Functions and Quasisymmetric Functions in Non-commuting Variables 10:00 - 10:30 Kevin Purbhoo (University of Waterloo), The MTV machine 14:30 - 15:00 Alex Wilson (Dartmouth College), A Diagram-Like Basis for the Multiset Partition Algebra 15:00 - 15:30 Etienne Tétreault (Université du Québec à Montréal), Plethystic decomposition of a power of homogeneous symmetric functions 16:00 - 16:30 Lucas Gagnon (York University), Unipotent symmetric functions 16:30 - 17:00 Nancy Wallace (York University), String decomposition of Parking functions 17:00 - 17:30 Farhad Soltani (York University) 17:30 - 18:00 GaYee Park (Université du Québec à Montréal), Minimal skew semistandard Young tableaux and the Hillman--Grassl correspondence 18:00 - 18:30 Baptiste Louf (Université du Québec à Montréal) 18:30 - 19:00 François Bergeron (Université du Québec à Montréal), The Super $\nabla$-Operator Algorithms and Complexity aspects of Optimization Org: Vijay Bhattiprolu and Joseph Cheriyan (Waterloo) "Optimization is the study of problems wherein one maximizes an objective subject to constraints. Such tasks are ubiquitous across various branches of science, both in theory and in practice. This is a vast field of research, and studying the existence/inexistence of efficient algorithms computing/approximating a given optimization problem has spawned several distinct subfields with well developed theories. An immensely useful algorithmic approach to optimization has been to pass from the original optimization problem to a related convex optimization problem (i.e. minimize a convex function over a convex set) which can then be solved efficiently. A particular focus of this session will be on various cutting edge aspects of convex optimization such as, - Broadening the set of tasks known to be amenable to convex optimization - Speeding up the runtime of convex optimization for optimization problems with sufficient structure - Limitations of convex optimization (and related hierarchies) for certain optimization tasks The above pursuits often draw upon tools from various established areas of mathematics such as spectral graph theory, high dimensional geometry, Fourier analysis, coding theory, etc. The session will also feature results from these areas that closely inform techniques and intuition in optimization. " Saturday December 3  (Wren A) 8:30 - 9:00 Aleksandr Nikolov (University of Toronto), Computing and Using Factorization Norms 9:00 - 9:30 Kostya Pashkovich (University of Waterloo), Non-Adaptive Matroid Prophet Inequalities For Minor-Closed Matroid Classes 9:30 - 10:00 Robert Robere (University of McGill), On the Proof Complexity of Integer Programming Solvers 10:00 - 10:30 Hamed Hatami (University of McGill), A Borsuk-Ulam lower bound for sign-rank 14:30 - 15:00 Euiwoong Lee (University of Michigan, Ann-Arbor), Correlation Clustering with Sherali-Adams 15:00 - 15:30 Nathan Bendetto-Proença (University of Waterloo), An approximation algorithm for the weighted fractional cut-covering problem 16:00 - 16:30 Shi Li (State University of New York, Buffalo), Online Unrelated-Machine Load Balancing and Generalized Flow with Recourse 16:30 - 17:00 Alex Tung (University of Waterloo), Cheeger Inequalities for Vertex Expansion and Reweighted Eigenvalues 17:00 - 17:30 Yibin Zhao (University of Toronto), A Simple and Efficient Parallel Laplacian Solver 17:30 - 18:00 Mehrdad Ghadiri (Georgia Tech), Bit Complexity of Efficient Optimization 18:00 - 18:30 Rafael Oliveira (University of Waterloo), Optimization, Invariant Theory, Computer Science and Math Analysis of PDEs Org: Damir Kinzebulatov (Univerisité Laval) and Jie Xiao (Memorial University) This session will bring together researchers within the analysis of PDEs arising in modeling of a variety of physical phenomena, including the problems in calculus of variations, bifurcation theory, probability theory, stochastic processes, phase transitions, fluid flow, wave propagation, heat diffusion processes, computational science, etc. with the goal of exchanging ideas and fostering possible collaborations in these fields. Saturday December 3  (Rosetti A) 8:00 - 8:30 Yeganeh Bahoo (Toronto Metropolitan University), Visibility: Theory and Application 8:30 - 9:00 Michel Delfour (Université de Montréal), Three-dimensional model of paclitaxel release from biodegradable polymer films 9:00 - 9:30 Scott Rodney (Cape Breton University), Bounded Solutions and Counterexamples 9:30 - 10:00 Nguyen Lam (Memorial University), Sharp quantitative stability for the Uncertainty Principle 10:00 - 10:30 Kodjo Raphael Madou (Université Laval), On the supercritical fractional diffusion equation with Hardy-type drift. 14:30 - 15:00 Robert McCann (University of Toronto), Asymptotics near extinction for nonlinear fast diffusion on a bounded domain 15:00 - 15:30 Ming Mei (McGill University), Structural stability of subsonic steady-state for Euler-Poisson equations with sonic boundary 16:00 - 16:30 Mathav Murugan (University of British Columbia), Harnack inequalities and conformal walk dimension 16:30 - 17:00 Jeremy Quastel (University of Toronto), Integrable fluctuations in random growth 17:00 - 17:30 Oscar Dominguez-Bonilla (Universidad Complutense de Madrid), Functional\&geometrical analysis of logarithmic Gagliardo-Lipschitz spaces 17:30 - 18:00 Alexey Shevyakov (University of Saskatchewan), Analytical Properties of Nonlinear Partial Differential Equations in Fluid Dynamics and Beyond Sunday December 4  (Rosetti A) 8:00 - 8:30 Milivoje Lukic (Rice University), An approach to universality using Weyl m-functions 8:30 - 9:00 Eric Sawyer (McMaster University), Sums of squares of functions and matrices with application to hypoellipticity in the infinitely degenerate regime 9:00 - 9:30 Reihaneh Vafadar (Université Laval), On divergence-free (form-bounded type) drifts 9:30 - 10:00 Deping Ye (Memorial University), The Minkowski type problems for unbounded convex hypersurfaces 10:00 - 10:30 Der-Chen Chang (Georgetown University) Approximation Theory, Function Spaces and Harmonic Analysis Org: Galia Dafni (Concordia), Oscar Dominguez (Universidad Complutense de Madrid), Javad Mashreghi (Laval) and Sergey Tikhonov (ICREA - Centre de Recerca Matemàtica) These three fundamental topics in analysis have been closely tied historically and continue to cross-fertilize in current research. In Canada in particular there are strong researchers as well as early career mathematicians in each of these areas who would benefit from such interaction, and several visitors from outside of Canada are also expected to participate. Saturday December 3  (Scott A) 8:30 - 9:00 Michael Roysdon (CRM-ISM, Concordia), Weighted Projection Bodies 9:00 - 9:30 Joshua Flynn (CRM-ISM, McGill), Helgason-Fourier Analysis and Sharp Geometric Inequalities on the Rank One Symmetric Spaces 9:30 - 10:00 Oscar Dominguez (Universidad Complutense Madrid), Truncated smooth function spaces 10:00 - 10:30 Cintia Pacchiano (Calgary), Existence of parabolic minimizers to the total variation flow on metric measure spaces 14:30 - 15:00 Ignacio Uriarte-Tuero (Toronto), Two weight norm inequalities for singular and fractional integral operators in $\mathbb{R}^n$ 15:00 - 15:30 Thomas Ransford (Laval), Constructive polynomial approximation 16:00 - 16:30 Bin Han (Alberta), Gibbs Phenomenon of Wavelets and Quasi-projection Approximation 16:30 - 17:00 Feng Dai (Alberta), Marcinkiewicz-type discretization for functions from a finite dimensional space 17:00 - 17:30 Gord Sinnamon (Western), The Fourier transform in rearrangement-invariant spaces 17:30 - 18:00 Scott Rodney (Cape Breton), More Limits of Orlicz Norms 18:00 - 18:30 Alex Iosevich (Rochester), Frame theory and finite point configurations 18:30 - 19:00 Alejandro Santacruz-Hidalgo (Western), Down spaces over a measure space with an ordered core Sunday December 4  (Scott A) 8:30 - 9:00 Ryan Gibara (Cincinnati), A Dirichlet problem for unbounded domains in metric measure spaces 9:00 - 9:30 Michael Wilson (Vermont), Smooth approximations to the $d$-dimensional Haar system 9:30 - 10:00 Eric Sawyer (McMaster), Two weight T1 theorems for Sobolev and Lp spaces with doubling measures and Calderón-Zygmund operators. 10:00 - 10:30 Almut Burchard (Toronto), Strong and weak maximal extensions of $\overline\partial$ on the Hartogs triangle Calculus of Variations and its Applications Org: Andrew Colinet (University of Toronto) and Dominik Stantejsky (McMaster) This session focusses on the calculus of variations, geometric analysis, partial differential equations (PDEs) and their applications in order to present some of the more recent developments in the field. One main idea of calculus of variations is to study and describe critical points and in particular minimizers of a given functional. Variational problems are closely linked to partial differential equations for example via Euler-Lagrange equations or energy conservation. Furthermore, they share a large set of common tools and interests that will be presented in this session including the investigation of existence/uniqueness, regularity theory, geometric flows or techniques such as Γ-convergence. Often, the considered functionals and equations have a physical interpretation such as a kinetic energy, a geometric meaning, e.g. the area of a domain or can be seen as a dynamical process (or a static limit thereof). This leads to a large domain of applications, for instance in physics, material science, mechanics and engineering, biology and many more. Sunday December 4  (Austen) 3:30 - 4:00 Bartek Protas (McMaster University), Searching for Singularities in Navier-Stokes Flows Using Variational Optimization Methods 4:00 - 4:30 Sullivan Macdonald (McMaster University), Degenerate Ellipticity and Hypoellipticity for Divergence Operators 4:30 - 5:00 Nicholas Kevlahan (McMaster University), Data assimilation for bathymetry in the nonlinear shallow water equations 5:00 - 5:30 Andrew Colinet (McMaster University), Zeroth Order Limiting Behaviour of the Ginzburg-Landau Functional Monday December 5  (Austen) 3:00 - 3:30 Zhichao Wang (University of British Columbia), Min-max minimal hypersurfaces with higher multiplicity 3:30 - 4:00 Ivan Salgado (University of Toronto), Approximate Solutions to the Superconducting Interface Model 4:00 - 4:30 Robert Haslhofer (University of Toronto), Classification of compact ancient noncollapsed flows in $R^4$ 4:30 - 5:00 Almut Burchard (University of Toronto), Symmetry-breaking in isodiametric capacitor problems 8:00 - 8:30 Dominik Stantejsky (McMaster University), A finite element approach for minimizing line and surface energies arising in the study of singularities in liquid crystals 8:30 - 9:00 Carrie Clark (University of Illinois Urbana-Champaign), Droplet formation in a nonlocal aggregation model 9:00 - 9:30 Denis Brazke (University of Heidelberg), $\Gamma$–limit for a sharp interface model related to pattern formation on biomembranes 9:30 - 10:00 Blaise Bourdin (McMaster University), Phase-field approximation of diffusion-driven fracture 10:00 - 10:30 Dmitry Pelinovky (McMaster University) Community building in instructor training Org: Carmen Bruni (Waterloo), Amenda Chow (York) and Fok-Shuen Leung (University of British Columbia) After two years of a deeply affecting and culture-changing pandemic, what do our instructor communities look like, and where do we go from here? In this session, we invite a wide variety of mathematicians to discuss instructor training, particularly in the context of community-building. How do mathematicians learn to teach at departments across Canada? What is the role of community-building in their training? What is the impact on students, novice teachers and veteran instructors? Are there any ideas and connections you can bring back to your own institution? Sunday December 4  (Wren C) 8:00 - 8:30 Thomas Wong (Heirot-Watt University), Fostering Global Teaching Teams in a pandemic. 8:30 - 9:00 Caroline Junkins & Jessie Meanwell (McMaster University), Takeaways from MacPRIME: partnering with undergraduates to foster and sustain a mathematical learning community 9:00 - 9:30 Chelsea Uggenti (University of Waterloo), Training graduate teaching assistants on active learning 9:30 - 10:00 Matthew Coles, Katie Faulkner and Jaye Sudweeks (University of British Columbia), Incorporating sustained community building in graduate TA experience 10:00 - 10:30 Emily Braley (Johns Hopkins University), A Distributed Leadership Model for Course Design and Building Community within an Instructional Team 15:30 - 16:00 Vanessa Radzimski (University of the Fraser Valley), A Team Teaching Model for Graduate Students' Development as Instructors 16:00 - 16:30 Jason Siefken (University of Toronto), Active Learning and the Novice Instructor 16:30 - 17:00 James Charbonneau (University of British Columbia), Experiences In Instructor Development Through Paired Teaching 17:00 - 17:30 Fok-Shuen Leung (University of British Columbia), Panel for Community Building in Instructor Training Complex Geometry and Moduli Space Org: Michael Albanese and Ruxandra Moraru (Waterloo) There is a close relationship between complex geometry and the geometry of many moduli spaces appearing in mathematics. Indeed, when studying complex structures on a given topological space (such as a manifold), one considers their moduli spaces as these give information about the geometry and classification of the structures. On the other hand, moduli spaces of objects on complex spaces – such vector bundles, sheaves, or connections, to name a few – themselves inherit complex structures from the underlying spaces. Such moduli therefore often provide important examples of complex spaces that have specific geometric structures. For instance, moduli spaces of Higgs bundles on Riemann surfaces are examples of hyperkähler manifolds and algebraically completely integrable systems, which have been extensively over the past 35 years and play a key role in complex algebraic geometry, gauge theory, mirror symmetry and the geometric Langlands program. The purpose of this session is to gather geometers studying complex spaces and/or moduli spaces to present some of the recent developments in these interrelated fields. Saturday December 3 2:30 - 3:00 Ethan Ross (Toronto), An Introduction to Stratified Vector Bundles 3:00 - 3:30 Tom Baird (Memorial), E-polynomials of character varieties associated to a real curve, Gerrard 4:00 - 4:30 Brent Pym (McGill), (Shifted) Poisson structures from noncommutative surfaces, Gerrard 4:30 - 5:00 Eric Boulter (Waterloo), Moduli Spaces of Sheaves on Kodaira Surfaces, Gerrard 5:00 - 5:30 Changho Han (Waterloo), Moduli of K3 surfaces with cyclic nonsymplectic automorphisms, Gerrard 5:30 - 6:00 Jeremy Usatine (Brown), Motivic integration for Artin stacks, Gerrard 9:00 - 9:30 Alessandro Malusà (Toronto), Quantisation on hyper-Kähler spaces, Gerrard 9:30 - 10:00 Maxence Mayrand (Sherbrooke), Twistor constructions of hyperkähler and hypercomplex structures near complex submanifolds, Gerrard 10:00 - 10:30 Claude LeBrun (Stony Brook), Twistors, Hyper-Kähler Manifolds, and Complex Moduli, Gerrard Sunday December 4 3:30 - 4:00 Xuemiao Chen (Waterloo), Tangent cones of admissible Hermitian-Yang-Mills connections, Rosetti C 4:00 - 4:30 Carlo Scarpa (UQAM), Special representatives of complexified Kähler classes, Rosetti C 4:30 - 5:00 Xi Sisi Shen (Columbia), The Continuity Equation on Hopf and Inoue Surfaces, Rosetti C 5:00 - 5:30 Benoit Charbonneau (Waterloo), Symmetric instantons, Rosetti C Control of dynamical systems Org: Ludovick Gagnon (INRIA - Nancy) and Roberto Guglielmi (Waterloo) "Control theory has received increasing attention in the last decades, both from the engineering and the mathematical communities. Multiple factors have contributed to this successful spread, including, on one hand, progresses in the understanding of the structural/theoretical aspects of control systems, that have provided a newer and deeper insight on the control properties of complex systems; on the other hand, the impressive growth in computational power and algorithms, that has allowed to cope with exciting real-life applications, varying from industrial processes to biological phenomena, from fluid dynamics to decision making, from robotics to social sciences. Through a diverse set of invited and contributed speakers, the main goal of this session is to bring together researchers focusing on mathematical foundations of control of dynamical systems with a wide range of expertise. Indeed, the session will welcome presentations on nonlinear feedback control, optimal control, controllability and observability properties of differential equations, as well as mean-field control and applications of machine learning to control design." Sunday December 4  (Rosetti A) 15:30 - 16:00 Michel Delfour (Université de Montréal), Control, Shape, and Topological Derivatives via Minimax Differentiability of Lagrangians 16:00 - 16:30 Pierre Lissy (Université Paris Dauphine), Desensitizing controls for the heat equation with respect to boundary variations 16:30 - 17:00 Jun Liu (University of Waterloo), Neural Lyapunov Control with Stability Guarantees 17:00 - 17:30 Ala' Alalabi (University of Waterloo), Boundary Stabilization of a Parabolic-Elliptic System Using Backstepping Approach 17:30 - 18:00 Ivan Moyano (Université de Nice) Monday December 5  (Rosetti A) 8:00 - 8:30 Mireille Broucke (University of Toronto), Principles and Paradoxes of Systems Neuroscience 8:30 - 9:00 Michel Duprez (Inria, Université de Strasbourg), Models of mosquito population control strategies for fighting against arboviruses 9:00 - 9:30 Kexue Zhang (University of Calgary), Event-Triggered Control for Linear Time-Delay Systems 9:30 - 10:00 Martin Guay (Queen's University) 10:00 - 10:30 Stevan Dubljevic (University of Alberta), Observer-based model predictive control for a class of well-posed linear systems Diophantine Arithmetic Geometry and Number Theory Org: Nathan Grieve and Patrick Ingram (York) The session will consist of a collection of lectures from researchers who work at the intersection of number theory and arithmetic geometry. The session will feature lectures that are within the traditional areas of these fields. It will also place some emphasis on overlapping areas of arithmetic dynamics and complex geometry. Saturday December 3  (Carlyle B) 8:00 - 8:30 Jason Bell (University of Waterloo), Intersections of orbits of self-maps with subgroups in semiabelian varieties 8:30 - 9:00 Keping Huang (MSU), Greatest Common Divisors on the Complement of Numerically Parallel Divisors 9:00 - 9:30 Matt Olechnowicz (University of Toronto), Dynamically improper hypersurfaces for endomorphisms of projective space 9:30 - 10:00 Xiao Zhong (University of Waterloo), $p$-Adic interpolation of orbits under rational maps 10:00 - 10:30 Borys Kadets (University of Georgia), Subspace configurations and low degree points on curves 14:30 - 15:00 David McKinnon (University of Waterloo), Rational curves and rational points 15:00 - 15:30 Hyungseop Kim (University of Toronto), Thomason filtration via $T(1)$-local topological cyclic homology 16:00 - 16:30 Ruiran Sun (CRM/McGill, postdoc), Isotriviality of algebraic fiber spaces and the distribution of entire curves 16:30 - 17:00 Debanjana Kundu (PIMS/UBC), Studying Hilbert's 10th problem via explicit elliptic curves 17:00 - 17:30 Sina Zabanfahm (University of Toronto), Cluster pictures for Hitchin fibers of rank two Higgs bundles 17:30 - 18:00 Subham Roy (University of Montreal), Generalized Mahler measure of Laurent polynomials 18:00 - 18:30 Jonathan Love (CRM/McGill), On $\ell$-torsion of superelliptic Jacobians over finite fields Sunday December 4  (Carlyle B) 8:00 - 8:30 Michael Groechenig (University of Toronto), Arithmetic properties of rigid local systems 8:30 - 9:00 Wanlin Li (University of Washington St. Louis), Ordinary Reductions of Abelian Varieties 9:00 - 9:30 Siva Sankar Nair (University of Montreal), An Invariant Property of Mahler Measures 9:30 - 10:00 Sun Kai Leung (University of Montreal), Dirichlet law for factorization of integers, polynomials and permutations 10:00 - 10:30 Matilde Lalin (University of Montreal), On the Northcott property for zeta functions over function fields and number fields Environmental and Geophysical Fluid Mechanics Org: Marek Stastna and Michael Waite (Waterloo) This session will include submissions on mathematical modelling and analysis of problems in environmental and geophysical fluid dynamics. The scope is broad and can include theoretical and computational work on any aspect of atmosphere, ocean, lake, or climate dynamics. Monday December 5  (Wren B) 8:00 - 8:25 Nicolas Grisouard (University of Toronto), Causes and diagnostics of internal tide scattering by balanced vortices 8:25 - 8:50 Greg Lewis (Ontario Tech University), Numerical continuation of amplitude-modulated rotating waves in sheared annular electroconvection 8:50 - 9:15 Francis Poulin (University of Waterloo), The Dynamics of Magnetic Vortices 9:15 - 9:40 Jason Olsthoorn (Queen's University), Optimal Heat Flux Estimates 9:40 - 10:05 Andrew Grace (University of Waterloo), Gravity Currents in the Cabbeling Regime 10:05 - 10:30 Marek Stastna (University of Waterloo), Rotation effects in long-thin lakes 15:00 - 15:25 Kelly Ogden (Western University), Mixing and Structure of Internal Hydraulic Jumps 15:25 - 15:50 Nicholas Kevlahan (McMaster University), Realistic Modelling of the Gulf Stream Using Brinkman Penalization 15:50 - 16:15 Erica Rosenblum (University of Manitoba), Observed and simulated surface salinity under transitioning ice cover in the Canada Basin 16:15 - 16:40 Jordan Fazio (University of Toronto), Differential Geometric Formalism for GFD Coordinate Transformation Applications 16:40 - 17:05 Michael Waite (University of Waterloo), Viscous generation of potential enstrophy in breaking gravity waves Facets of Operator Algebras Org: M. Ali Asadi-Vasfi (Toronto), George Elliott (Toronto), Ilijas Farah (York), Xuanlong Fu (Fields) and Maria Grazia Viola (Lakehead) Operator Algebras consists of the study of algebras of bounded linear operators on Hilbert spaces. It was initially developed in the late 1920s and early 1930s in an attempt to formalize the algebra of observables in quantum mechanics. The field has since become a fundamental part of modern mathematics and theoretical physics, as the natural setting for quantum information theory and quantum computing. In the last four decades there have been enormous advances in the field, such as the completion of a landmark in the Elliott classification program for nuclear C*-algebras, Jones and Popa's breakthrough work in the classification of finite factors, and the solution of Tsirelson's problem in quantum information theory. Moreover, work in operator algebras and noncommutative geometry has influenced many diverse areas of mathematics, such as number theory, harmonic analysis, model theory, group theory, knot theory, and ergodic theory. The goal of the session will be to have the participants report on recent advances in the area, interesting open questions, and new connections to explore. Saturday December 3  (Scott B) 8:00 - 8:30 Kenneth Davidson (University of Waterloo), Positive Maps and Entanglement in Real Hilbert Spaces 8:30 - 9:00 Remus Floricel (University of Regina), $C^*$-subproduct and product systems 9:00 - 9:30 Marcelo Laca (University of Victoria), Equilibrium on C*-algebras of product systems 9:30 - 10:00 Masoud Khalkhali (Western University), Double scaling limits of Dirac ensembles and Liouville quantum gravity 10:00 - 10:30 Jananan Arulseelan (McMaster University), Computable Continuous Logic, QWEP, and Type III Factors 14:30 - 15:00 Aaron Tikuisis (University of Ottawa), Groupoids with prescribed torsion homology 15:00 - 15:30 Dilian Yang (University of Windsor), Topological full groups of ample groupoids 16:00 - 16:30 Camila Fabre Sehnem (University of Waterloo), A uniqueness theorem for Toeplitz algebras of semigroups 16:30 - 17:00 Jason Crann (Carleton University), Quantum teleportation and subfactors 17:00 - 17:30 Arundhathi Krishnan (University of Waterloo), Markovianity and the Thompson Group $F$ 17:30 - 18:00 Dolapo Oyetunbi (University of Ottawa), On $\ell$-open and $\ell$-closed $C^*$-algebras. 18:00 - 18:30 Jintao Deng (University of Waterloo), The coarse Baum-Connes conjecture for certain relative expanders Sunday December 4  (Scott B) 8:00 - 8:30 James Mingo (Queen's University), The Infinitesimal Distribution of Commutators and Anti-commutators 8:30 - 9:00 Andrew Dean (Lakehead University), Structure and classification of real C*-algebras 9:00 - 9:30 Zhuang Niu (University of Wyoming), Weak Rokhlin Property and Weak Tracial Approximation 9:30 - 10:00 Cristian Ivanescu (MacEwan University), The Cuntz semigroup and the structure of C*-algebras 10:00 - 10:30 Javad Mashreghi (Université Laval), Lebesgue's constants in local Dirichlet spaces 15:30 - 16:00 Feodor Kogan (University of Toronto), Groupoid models of the irrational rotation algebra 16:00 - 16:30 Therese Landry (Fields Institute for Research in Mathematical Sciences), Noncommutative Solenoids, Length Functions on Twisted Group $C^*$-Algebras, and Inductive Limits of Spectral Triples 16:30 - 17:00 Paul Skoufranis (York University), Joint Majorization in Continuous Matrix Algebras 17:30 - 18:00 Massoud Amini (Tarbiat Modares University) Inclusive Practices in Large Classes Org: Katherine Daignault (University of Toronto) and Marie MacDonald (Cornell) Many instructors are eager to incorporate new teaching strategies to create inclusive learning environments such as using active learning techniques which require more student check-ins. In large-scale classes with hundreds of students, it can be challenging to implement new teaching techniques without overburdening ourselves in the face of limited teaching resources/supports. This session will discuss inclusive practices that scale up well for large classes and will provide advice on the strategic use of teaching assistants to aid in the creation and implementation of diverse assessments. Monday December 5  (Wren C) 8:30 - 9:00 Diana Skrzydlo (University of Waterloo), Universal Design for Learning in Stats 9:00 - 9:30 Jaimal Thind (University of Toronto Mississauga) 9:30 - 10:00 Anton Mosunov and Graeme Turner (University of Waterloo), Following Principles of UDL When Authoring Electronic Textbooks and Auto-Graded Assessments 10:00 - 10:30 Group Discussion 15:00 - 15:30 Alyssa Lumley (York University) 15:30 - 16:00 Caroline Junkins (McMaster University) 16:00 - 16:30 Andrijana Burazin (University of Toronto Mississauga), making learning math great again for everyone 16:30 - 17:00 Group Discussion Low-dimensional Topology Org: Hans U. Boden (McMaster) and Duncan McCoy (UQAM) The focus will be on geometry and topology of manifolds in low dimensions. Topics of interest Include knots and links, geometric structures on manifolds in dimensions 3 and 4, gauge theory, geometric group theory. Saturday December 3  (Austen) 9:00 - 9:20 Steve Boyer (UQAM), The JSJ graph of knot exteriors and the L-space conjecture 9:30 - 9:50 Alberto Cavallo (UQAM), Slice links and smooth 4-manifolds 10:00 - 10:20 Patrick Naylor (Princeton), Doubling Gluck twists 14:30 - 14:50 Alexander Kolpakov (Neuchâtel), Subspace stabilizers in hyperbolic lattices 15:00 - 15:20 Keegan Boyle (UBC), Equivariant slice disks for symmetric knots 16:00 - 16:20 Dror Bar-Natan (Toronto), Simple, Concise, Powerful, and Not Understood 16:30 - 16:50 Ty Ghaswala (Waterloo), Small covers of big surfaces 17:00 - 17:20 Yvon Verberne (Toronto), Automorphisms of the fine curve graph 17:30 - 17:50 Homayun Karimi (McMaster), Concordance invariants of null-homologous knots in thickened surfaces 18:00 - 18:20 Matt Stoffregen (Michigan State), Concordance of cables of the figure eight knot 18:30 - 18:50 Mike Wong (LSU/Ottawa), Ribbon homology cobordism Sunday December 4  (Austen) 8:00 - 8:20 Charles Daly (Brown), Projective Rigidity of Dehn-Surgery on the Figure Eight Knot 8:30 - 8:50 Jie Chen (McMaster), FlatKnotInfo: A Table of Flat Knots 9:00 - 9:20 Robert Harris (Waterloo), Non-cyclic branched covers of the complex projective plane 9:30 - 9:50 Patricia Sorya (UQAM), Pentes caractérisantes et nœuds satellites / Characterizing slopes for satellite knots 10:00 - 10:20 Puttipong Pongtanapaisan (Saskatchewan), Behaviors of meridional ranks under various operations Machine learning in finance Org: Michael Chen (York), Hyejin Ku (York), George Lai (WLU) and Hongmei Zhu (York) With increased power of Machine Learning/AI/Deep Learning, as well as the increased acceptance by both industries and consumers, more research topics are exposed and are challenging the community, especially on accuracy, privacy, and protection. This session is devoted to this highly promising and wide open research frontier. Monday December 5  (Carlyle A) 8:00 - 8:30 Roy Kwon (University of Toronto), Data-driven Integration of Norm Penalized Mean-variance Optimization 8:30 - 9:00 Chifeng Shen (York University), Bayesian Online Changepoint Detection in Finance 9:00 - 9:30 Wei Xu (Toronto Metropolitan University), Random Willow Tree with Application in Risk Management 9:30 - 10:00 Yongzeng Lai (Wilfrid Laurier University) Schedule to be determined Michael Chen (York University), Carlyle A Victor Huang (York University), Carlyle A Yingyan Jia (Wilfrid Laurier University), Carlyle A Yaode Sui (Wilfrid Laurier University), Carlyle A Mathematical Modeling and Analysis in Spatial Ecology and Epidemiology Org: Yu Jin (University of Nebraska-Lincoln), Hao Wang (University of Alberta) and Xiaoqiang Zhao (Memorial University) Mathematical modeling and analysis have been powerful in discovering novel dynamics and understanding driving mechanisms for observed phenomena in ecology and epidemiology. Recently, emerging ecological or epidemiological challenges such as those in the context of climate changes or disease outbreaks need urgent attention and lead to new demanding and tough mathematical problems. In this special session, we propose to invite researchers to present recent advances on mathematical modeling and analysis in spatial ecology and epidemiology. The proposed session mainly focuses on mathematical investigation of long-term dynamics and spatial spread of populations or diseases using reaction-diffusion equations (local dispersal) and integrodifferential equations (nonlocal dispersal). This session will serve as a platform for researchers to exchange new ideas and initiate potential collaborations. Saturday December 3 14:30 - 15:00 Jianhong Wu (York University) 15:00 - 15:30 Junping Shi (College of William and Mary), Evolution of dispersal in advective patchy environments 16:00 - 16:30 Yuming Chen (Wilfrid Laurier University), Global dynamics of an advective Lotka-Volterra competition-diffusion system 16:30 - 17:00 Theodore Kolokolnikov (Dalhousie University), Modelling of disease spread through heterogeneous population 17:00 - 17:30 Thomas Hillen (University of Alberta), Pattern formation in non-local population models 17:30 - 18:00 Zhongwei Shen (University of Alberta), Population dynamics under climate change 18:00 - 18:30 Ming Mei (Champlain College-Saint-Lambert), Sharp traveling waves for degenerate viscosity Burgers equations with time-delay 18:30 - 19:00 Christopher Heggerud (University of California), Niche differentiation in the light spectrum promotes coexistence of phytoplankton species: a spatial modelling approach Sunday December 4 15:30 - 16:00 Mark Lewis (University of Alberta), Models and empirical evidence for the use of memory in animal movement patterns 16:00 - 16:30 Shigui Ruan (University of Miami), On the Dynamics of a Diffusive Foot-and-Mouth Disease Model with Nonlocal Infections 16:30 - 17:00 Adrian Lam (Ohio State University), Invasion of open space by multiple competing species 17:00 - 17:30 Olga Vasilyeva (Memorial University of Newfoundland), Phase-plane analysis of steady states of a spruce budworm model with advection 17:30 - 18:00 Jude Kong (York University) 18:00 - 18:30 Yurij Salmaniw (University of Albera), Modelling habitat loss with partial differential equations: the effects of habitat fragmentation on survival and abundance Monday December 5 0 - 0 James Watmough (University of New Brunswick), Gerrard 8:00 - 8:30 Stephen Cantrell (University of Miami), Resource matching in spatial ecology and evolutionary advantage, Gerrard 8:30 - 9:00 Elena Braverman (University of Calgary), The influence of the choice of a diffusion strategy on the harvesting outcome for spatially heterogeneous populations, Gerrard 9:00 - 9:30 Bingtuan Li (University of Louisville), Effects of a barrier zone on invasion of a population with a strong Allee effect, Gerrard 9:30 - 10:00 Frederic Hamelin (Université de Rennes), Host Diversification May Split Epidemic Spread into Two Successive Fronts Advancing at Different Speeds, Gerrard 10:00 - 10:30 Shuwen Xue (Northern Illinois University), Global existence, persistence and spreading speeds of a parabolic-parabolic chemotaxis model with logistic source, Gerrard 15:00 - 15:30 Xingfu Zou (University of Western Ontario), Evolution of anti-predation response of prey in a general patchy environment 16:00 - 16:30 Chunhua Ou (Memorial University of Newfoundland), Selection of the asymptotic spreading speed to the diffusive Lotka-Volterra competition model 16:30 - 17:00 Micah Brush (University of Alberta), Modelling long term mountain pine beetle dynamics with changing tree resilience Mathematics of machine learning Org: Ben Adcock (SFU), Simone Brugiapaglia (Concordia), Giang Tran (Waterloo) and Hamid Usefi (Memorial) "Machine learning is having a profound impact on many different sectors including scientific research, industry, and policymaking. Yet, its mathematical foundations are still far from being well understood. While techniques such as deep learning have produced outstanding success on a wide range of real-world applications, it is increasingly well known that such methods may exhibit unpredictable performance or instabilities, and generally lack interpretability. Moreover, although stochastic optimization algorithms are ubiquitous in machine learning, their convergence properties are still not fully understood in the nonconvex framework. These and other gaps between theory and practice raise the pressing need for a broader, more comprehensive mathematical foundations for machine learning. This session will mark the third in a series of sessions at CMS meetings on this theme. Its aim is to bring together a diverse group of leading experts in mathematics of machine learning. The session will be a forum for discussing and exploring emerging ideas in this fast-growing and exciting field." Saturday December 3  (Rosetti C) 8:30 - 9:00 Christopher Musco (New York University), Robust Active Learning via Leverage Score Sampling 9:00 - 9:30 Rongjie Lai (Rensselaer Polytechnic Institute), Learning Manifold-structured Data using Deep networks: Theory and Algorithms 9:30 - 10:00 Esha Saha (University of Waterloo), SPADE4: Sparsity and Delay Embedding based Forecasting 10:00 - 10:30 Diane Guignard (University of Ottawa), Nonlinear approximation of high-dimensional anisotropic analytic functions 14:30 - 15:00 Jason Bramburger (Concordia University), Deep Learning of Conjugate Mappings 15:00 - 15:30 Manuela Girotti (Saint Mary's University), Neural Networks Efficiently Learn Low-Dimensional Representations with SGD 16:00 - 16:30 Chrystal Smith (York University), Natural Language Processing in the field of Medical Translation 16:30 - 17:00 Tanya Schmah (University of Ottawa), Diffeomorphic image matching with a preference for “simple” transformations 17:00 - 17:30 Sebastian Moraga (Simon Fraser University), Deep neural Networks are effective at learning high-dimensional Banach-valued functions from limited data 17:30 - 18:00 Aaron Berk (McGill University), Compressed sensing with generative models and Fourier measurements: provable guarantees under incoherence 18:00 - 18:30 Tan Minh Nguyen (University of California, Los Angeles), FourierFormer: Transformer Meets Generalized Fourier Integral Theorem Sunday December 4  (Rosetti C) 8:00 - 8:30 Kilian Fatras (Mila), Minibatch Optimal Transport distances meets Deep Learning 8:30 - 9:00 Quentin Bertrand (Mila), Synergies Between Disentanglement and Sparsity: a Multi-Task Learning Perspective 9:00 - 9:30 Marina Garrote-Lopez (University of British Columbia), Algebraic Optimization of Sequential Decision Problems 9:30 - 10:00 Andersen Ang (University of Waterloo), Imhomogeous graph signal estimation via a cardinality penalty 10:00 - 10:30 Weiqi Wang (Concordia University), Compressive Fourier collocation methods for high-dimensional diffusion equations with periodic boundary conditions. Matrix Analysis and Operator Theory (Bilingual Session) Org: Ilia Binder (University of Toronto), Ludovick Bouthat (l’Université Laval) and Frédéric Morneau-Guérin, (Université TÉLUQ) Please note that this session will be bilingual and proposals in either French or English will be accepted. The main goal of this session is to bring together researchers sharing an interest in various aspects of matrix theory and to offer them the opportunity to discuss recent developments in this sub-discipline. The session also aims to foster interactions between researchers whose research lies at the interface between matrix theory and its concrete applications (in statistics, numerical analysis, physics, neuroscience, number theory, bioinformatics, etc.) and those working in fundamental mathematics. Monday December 5  (Scott) 8:00 - 8:30 Galia Dafni (Concordia), Approximate moment conditions for $h^p$ atoms and molecules, and the boundedness of inhomogeneous Calder\'on--Zygmund operators 8:30 - 9:00 David Feder (Calgary) 9:00 - 9:30 Milivoje Lukic (Rice), Stahl--Totik regularity for Schrodinger operators 9:30 - 10:00 Pierre-Olivier Parisé (University of Hawaii at Manoa), Infinite Matrices of Operators 10:00 - 10:30 Ignacio Uriarte-Tuero (Toronto), An operator theoretic application of two weight norm inequalities for SIOs in $\mathbb{R}^n$ 15:00 - 15:30 Marcu-Antone Orsoni (Toronto) 15:30 - 16:00 Ludovick Bouthat (Université Laval), The convergence of Doubly Stochastic Markov Chains 16:00 - 16:30 David Kribs (University of Guelph), Graph theory, matrix theory, and operator theory, and distinguishing quantum states via LOCC 16:30 - 17:00 Frédéric Morneau-Guérin (Université TÉLUQ), Sur une question posée par Erdös au sujet des matrices doublement stochastiques Pursuit-evasion games on graphs Org: Anthony Bonato (TMU) and Andrea Burgess (UNB) In pursuit-evasion games on graphs, a set of pursuers attempts to locate or eliminate the threat posed by an evader in the network. The rules greatly determine the difficulty of the questions posed above. For example, the evader may be visible, but the pursuers may have limited movement speed, only moving to nearby vertices adjacent to them. Such a paradigm leads to the game of Cops and Robbers and deep questions like Meyniel's conjecture on the cop number of a graph. A central theme is the optimization of certain parameters, such as the cop number, burning number, or localization number. Finding the exact values, bounds, and algorithms to compute these graph parameters leads to fascinating topics intersecting with classical graph theory, combinatorial designs, and probabilistic methods. Sunday December 4  (Wren A) 9:00 - 9:30 Andrea Burgess (University of New Brunswick Saint John), The Deduction Game 9:30 - 10:00 JD Nir (Toronto Metropolitan University), On the Best Way to Play with Fire: an Adversarial Burning Game 10:00 - 10:30 Jessica Enright (University of Glasgow), Multilayer cops-and-robbers 15:00 - 15:30 Michael Molnar (Toronto Metropolitan University), Limited Visibility Localization 15:30 - 16:00 Trent Marbach (Toronto Metropolitan University), Limited visibility localization 16:00 - 16:30 Brittany Pittman (Toronto Metropolitan University), The localization game on directed graphs 16:30 - 17:00 Todd Mullen (University of Prince Edward Island), Surrounding an Active Robber 17:00 - 17:30 John Marcoux (Toronto Metropolitan University), Distance-Restricted Firefighting on Finite Graphs 17:30 - 18:00 Caleb Jones (Memorial University of Newfoundland), Burning Triple Systems Quantum Information Theory Org: Nathaniel Johnston (Mount Allison) and Sarah Plosker (Brandon) With more and more mathematicians working in the field of Quantum Information Theory, and with a plenary on the topic at the meeting, it seems rather fitting to have such a session. The session will feature researchers employing tools and techniques from a wide array of fields of mathematics, including those working in matrix analysis, operator theory, and mathematical physics, and foster interaction between these researchers. Saturday December 3  (Rosetti B) 8:30 - 9:00 Jason Crann (Carleton), Gaussian quantum information over general kinematical systems 9:00 - 9:30 Jeremy Levick (Guelph), Generalizing a result of Watrous on Mixed Unitarity 9:30 - 10:00 Michael Kozdron (Regina), A Quantum Martingale Convergence Theorem 10:00 - 10:30 Yuming Zhao (Waterloo), An operator-algebraic formulation of self-testing Sunday December 4  (Rosetti B) 8:00 - 8:30 Larissa Kroell (Waterloo), An operator system view on regular quantum graphs 8:30 - 9:00 Frank Fu (Dalhousie), Programming quantum circuits with Proto-Quipper 9:00 - 9:30 Xiaoning Bian (Dalhousie), Generators and relations for 3-qubit Clifford+CS operators 9:30 - 10:00 Eric Culf (Ottawa), Rigidity for Monogamy-of-Entanglement Games 10:00 - 10:30 Debbie Leung (Waterloo), The platypus of the quantum channel zoo and their generic nonadditivity 15:30 - 16:00 Shirin Moein (Mt Allison), Absolutely $k$-Incoherent Quantum States and Spectral Inequalities for Factor Width of a Matrix 16:00 - 16:30 Carlo Maria Scandolo (Calgary), The operational foundations of PT-symmetric and quasi-Hermitian quantum theory 16:30 - 17:00 Thomas Theurer (Calgary), Resource theories of operations Recent advances on nonlinear evolution equations Org: Fabio Pusateri (Toronto), Gigliola Staffilani (MIT) and Catherine Sulem (Toronto) In this session the speakers will report on recent advances on nonlinear evolution equations and their mathematical analysis. Topics will include Fluid Dynamics, General Relativity, Dispersive Equations and Parabolic Flows. Saturday December 3  (Duchesse) 8:30 - 9:00 Manuela Girotti (Saint Mary's University), The dynamics soliton gasses: Fredholm determinants, asymptotics, and kinetic equations 9:00 - 10:00 Slim Ibrahim (University of Victoria) 10:00 - 10:30 Yakov Shlapentokh-Rothman (University of Toronto), Self-Similarity for the Einstein Vacuum Equations and Applications 14:30 - 15:30 Michael Sigal (University of Toronto), Vacuum solutions of the theory of electroweak interactions 16:00 - 16:30 Olga Trichtchenko (Western University) 16:30 - 17:30 Catherine Sulem (University of Toronto), A Hamiltonian approach to nonlinear modulation of surface water waves in the presence of linear shear currents. 17:30 - 18:00 Manuel Palacios (University of Toronto), Asymptotic Stability of Peakons for the Novikov equation 18:00 - 18:30 Thomas Wolf (Brock University), Exact solitary wave solutions for a coupled gKdV-NLS system Sunday December 4  (Duchesse) 8:30 - 9:00 Giusy Mazzone (Queen’s University), Periodic motion of a harmonic oscillator interacting with a viscous fluid 9:00 - 9:30 Gael Yomgne Diebou (Fields Institute), Remarks on the heat flow of harmonic maps: uniqueness and weak-strong theory 9:30 - 10:00 Jia Shi (MIT), On the analyticity of the Muskat equation 10:00 - 10:30 Adilbek Kairzhan (University of Toronto), Asymptotic stability near the soliton for quartic Klein-Gordon in 1D Representation Theory of Algebras Org: , Kaveh Mousavand (Queen's) and Hugh Thomas (UQAM) Sitting at the intersection of several directions of research, representation theory of algebras has been an active domain of research which receives impetus from different areas. In return, it often provides new tools to the study of some classical and modern problems in various realms of research. This session aims to bring together some researchers working on different aspects of representation theory of algebras to share their perspectives and new research. In particular, there will be talks on the combinatorial, geometric and homological aspects of representation theory, to just mention a few. This will hopefully stimulate further interaction between experts in this area, as well as with those interested in the connections between representation theory with some other domains. Saturday December 3  (Carlyle A) 8:30 - 9:00 Milen Yakimov (Northeastern University), Poisson geometry and representation theory of root of unity quantum cluster algebras 9:10 - 9:40 Charles Paquette (Royal Military College), Biserial algebras and bricks 9:50 - 10:20 Shiping Liu (Université de Sherbrooke), Module categories with a null forth power of the radical 14:30 - 15:00 Benjamin Dequêne (Université du Québec à Montréal), Some Jordan recoverable subcategories of modules over gentle algebras. 15:00 - 15:30 Deepanshu Prasad (Queen's University), An Extension of Sato-Kimura Theorem for Semi-invariant rings 16:00 - 16:30 Colin Ingalls (Carleton University), Sets of mutually orthogoval projective and affine planes 16:40 - 17:10 Gordana Todorov (Northeastern University), Nakayama Algebras which are Defect Invariant 17:20 - 17:50 Charles Senécal (Université de Montréal), Centralizers of products of $LU_q(\mathfrak{sl}_2)$-modules at roots of unity 17:50 - 18:20 Yvan Saint-Aubin (Université de Montréal), Spin chains as modules over the affine Temperley-Lieb algebra Sunday December 4  (Carlyle A) 8:30 - 9:00 Nicholas Williams (Lancaster University), Cyclic polytopes and representation theory 9:10 - 9:40 Khrystyna Serhiyenko (University of Kentucky), Title: Leclerc’s conjecture on a cluster structure for type A Richardson varieties 9:50 - 10:20 Emily Barnard (DePaul University), Triangulations and maximal almost rigid representations 15:30 - 16:00 David Speyer (University of Michigan), Coxeter groups and torsion classes of quiver and preprojective algebras 16:10 - 16:30 Will Dana (University of Michigan), Walls of shards and filtrations of shard modules 16:40 - 17:10 Thomas Brüstle (Université de Sherbrooke), Relative torsion classes Set theory and its applications Org: Keegan Dasilva Barbosa (Toronto) and Paul Szeptycki (York) Set theory is a branch of mathematical logic focused on studying the nature of the infinite. It is a long standing field that has found applications in topology, topological dynamics, C^* algebras, theoretical computer science, and combinatorics. The goal of this session is to bring forth a wide variety of researchers to present their current results, discuss current trends, and potentially collaborate. Saturday December 3  (Baker) 8:00 - 8:30 Franklin Tall (University of Toronto), An undecidable extension of Morley's theorem on the number of countable models 8:30 - 9:00 Vinicius Rodrigues (York University), Special sets of reals and weakenings of normality in Isbell-Mrówka spaces 9:00 - 9:30 Cesar Corral (York University), Strong Fréchet properties, squares and AD families 9:30 - 10:00 Daniel Calderon (University of Toronto), Borel's conjecture and meager-additive sets 10:00 - 10:30 Davoud Abdi (University of Calgary), Counterexample to Conjectures of Bonato-Tardif, Thomassé and Tyomkyn 14:30 - 15:00 Shaun Allison (University of Toronto), Polish groups involving $S_\infty$ 15:00 - 15:30 Sumun Iyer (Cornell University), Dynamics of the Knaster continuum homeomorphism group 16:00 - 16:30 Jing Zhang (University of Toronto) 16:30 - 17:00 Tetsuya Ishiu (Miami University), The Marde{\v s}i{\'c} Conjecture for Countably Compact Spaces Stochastic Systems, Probability, and Other Mathematical Aspects of Data Science Org: Martin Lysy (Waterloo) Stochastic systems and probability are the fundamental components of statistical analysis and data science – both as mathematical models and for the computational algorithms which fit these models to data. The purpose of this session is to present some recent developments in statistics, machine learning, and data science to an audience of mathematicians, in the hopes of establishing an interchange of ideas between colleagues across a broad spectrum of interests in analyzing data: from those on the empirical side of things to those from diverse areas in mathematics which may or may not have an obvious connection to data analysis. Monday December 5  (Rosetti C) 8:00 - 8:30 Hanna Jankowski (York University), The isotonic single index model under fixed and random designs 8:30 - 9:00 Meixi Chen (University of Waterloo), Decoding Neural Population Dynamics Through Latent Factor Models 9:00 - 9:30 Lobna Khadraoui (University of Ottawa), Large graph limit for an epidemic evolution process in random network with heterogeneous age, variant and connectivity 9:30 - 10:00 Jesse Gronsbell (University of Toronto), Leveraging electronic health records for data science 10:00 - 10:30 Sanjeena Dang (Carleton University), Clustering matrix-variate count data 15:00 - 15:30 Dan Roy (University of Toronto), Admissibility is Bayes optimality with infinitesimals 15:30 - 16:00 Osvaldo Espin Garcia (Western University), Using genetic algorithms in the design of two-phase studies 16:00 - 16:30 Mohan Wu (University of Waterloo), Parameter Inference for Differential Equations Using the Kalman Filter 16:30 - 17:00 Cameron Jakub (Guelph University), The Angle Process in Deep Neural Networks and the Bessel Numbers of the Second Kind Student Research Talks Org: Alexander Clow and Daniel Zackon Presentations will be given by students at the undergraduate and graduate levels. These will introduce the student’s research to a general mathematical audience. All research areas in pure/applied math, statistics, and math education will be considered Monday December 5  (Carlyle B) 8:00 - 8:30 Pingping Cong (University of Western Ontario), Dynamics of a three-species food chain model with fear effect 8:30 - 9:00 Serhii Koval (Memorial University of Newfoundland) 9:00 - 9:30 Jenny Lawson (University of Calgary), Optimality and Sustainability of Delayed Impulsive Harvesting 9:30 - 10:00 Sun-Kai Leung (Université de Montréal) 10:00 - 10:30 Silas Vriend (McMaster University), Infinite bubbles: a planar isoperimetric problem with two unbounded chambers Topics in Mathematical Biology: Theory, Applications and Future Perspectives Org: Kunquan Lan (TMU), Gunog Seo (Colgate University) and Gail S. K. Wolkowicz (McMaster) Mathematical Biology is the application of mathematics to biological systems and is one of the fastest-growing interdisciplinary areas in applied mathematics. It is a qualitative and quantitative study of a mathematical model to describe many biological phenomena. This session aims to discuss recent developments and future directions in various topics of Mathematical Biology, emphasizing analytical and numerical approaches and applications Saturday December 3  (Churchill Ballroom) 8:00 - 8:30 Robert Stephen Cantrell (University of Miami), A two-stage reaction-diffusion system 8:30 - 9:00 Sabrina H. Streipert (University of Pittsburgh), Introduction and Application of the Augmented Phase Portrait 9:00 - 9:30 Julien Arino (University of Manitoba), Backward bifurcation in an SLIARS model with vaccination 9:30 - 10:00 Shigui Ruan (University of Miami), Imperfect and Bogdanov-Takens Bifurcations in Biological Models: From Harvesting of Species to Removal of Infectives 10:00 - 10:30 Troy Day (Queen's University), The Epidemiology and Economics of Physical Distancing during Infectious Disease Outbreaks 14:30 - 15:00 Hermann Eberl (University of Guelph), Chaos in the Hive and Beyond: A Multiscale Model of Nosemosis in an Apiary 15:00 - 15:30 Monica Cojocaru (University of Guelph), Individual risk and discomfort perceptions, NPI policies and the evolution of the pandemic in Ontario 2020 16:00 - 16:30 Rongsong Liu (University of Wyoming), An Age-structured Model of Bird Migration 16:30 - 17:00 Samuel Matthias Fischer (Osnabrück University), KDE-likelihood: a tool for fitting stochastic dynamic models to equilibrium data 17:00 - 17:30 Chunhua Shan (University of Toledo), Transmission dynamics and periodic phenomena in a model of West Nile virus with maturation time 17:30 - 18:00 Stephanie Abo (University of Waterloo), Can the clocks tick together despite the noise? Stochastic simulations and analysis Sunday December 4  (Churchill Ballroom) 8:00 - 8:30 Xinzhi Liu (University of Waterloo), Multi-group flocking control of multi-agent systems 8:30 - 9:00 Yu Jin (University of Nebraska-Lincoln), Population dynamics in a habitat with a protection zone 9:00 - 9:30 Yuming Chen (Wilfrid Laurier University), Threshold dynamics of a viral infection model with defectively infected cells 9:30 - 10:00 Chunhua Ou (Memorial University of Newfoundland), Dynamics of Diffusive Lotka-Volterra competition systems in a shifting environment 10:00 - 10:30 Xiaoqiang Zhao (Memorial University of Newfoundland), Spatial Dynamics of Species with Annually Synchronized Emergence of Adults 15:30 - 16:00 Junping Shi (William & Mary), Turing type bifurcation in reaction-diffusion models with nonlocal dispersal 16:00 - 16:30 Frédéric Hamelin (Université de Rennes), The proportion of resistant hosts in mixtures should be biased towards the resistance with the lowest breaking cost 16:30 - 17:00 Christopher M Heggerud (University of California, Davis), Mathematical comparison and empirical review of the Monod and Droop forms for resource-based population dynamics 17:00 - 17:30 Maryam Basiri (University of Ottawa), Traveling wave solutions for a free boundary problem modeling spread of ecosystem engineers 17:30 - 18:00 Laurence Ketchemen (University of Ottawa), Populations dynamics in fragmented landscapes under monostable and bistable growth dynamics 18:00 - 18:30 Tianyu Cheng (Western University), A new perspective on infection forces with demonstration by a DDE infectious disease model Monday December 5  (Churchill Ballroom) 8:00 - 8:30 Huaiping Zhu (York University) 8:30 - 9:00 Hao Wang (University of Alberta), Cognitive Animal Movement Modelling 9:00 - 9:30 Weiwei Qi (University of Alberta), Noise-induced transient dynamics 9:30 - 10:00 Elena Braverman (University of Calgary), On stability and asymptotics of equations and systems of population dynamics with concentrated and distributed delays 10:00 - 10:30 Zhongwei Shen (University of Alberta), Coexistence in random environments Topological Methods in Model Theory Org: Chris Eagle (University of Victoria) and Franklin Tall (Toronto) From its inception model theory has had interesting interactions with general topology, and some of the most striking results in model theory have deep ties to topology. In recent years there has been a great deal of progress in using more sophisticated tools from topology in model theory and the scope of application has broadened from first-order logic to include many other parts of model theory. This session will bring together researchers working in areas of where interactions between model theory and topology play a significant role. Sunday December 4  (Wren B) 9:00 - 9:30 Jose Iovino (UTSA), The undefinability of Tsirelson's space 9:30 - 10:00 Eduardo Duenez (UTSA), Structures of random variables and stability of Orlicz spaces 10:00 - 10:30 Clovis Hamel (Toronto), Topological Function Spaces, Double Ultralimits and Definability 15:30 - 16:00 Isaac Goldbring (UCI), An application of infinitely generic structures to von Neumann algebras 16:00 - 16:30 Nicolas Chavarria Gomez (Notre Dame), Pontryagin duality and continuous logic 16:30 - 17:00 Leonardo Coregliano (IAS), Continuous combinatorics and natural quasirandomness 17:00 - 17:30 Miguel Moreno (Vienna), Finding the main gap in the generalised descriptive set theory 17:30 - 18:00 Anand Pillay (Notre Dame), Topological dynamics and model theory Transient Behaviors in Population Dynamics Org: Felicia Magpantay (Queen's), Xiaoying Wang (Trent) and Xingfu Zou (Western) "Asymptotic behavior has been the longstanding focus in population dynamics. However, understanding the long-term dynamics alone is not sufficient because many ecological processes run on shorter timescale. For example, a catastrophic event such as a flooding or hurricane can be viewed as a perturbation of an otherwise stable ecosystem. The recovery of the ecosystem to its original state runs on a transient time scale. In human society, an emerging infectious disease usually persists over a short period compared to the time scale of vital dynamics. Therefore, studying the transient behaviors in population dynamics has important implications for ecosystem management and the implementation of disease intervention strategies. The study of mathematical aspects of transient dynamics has been growing in recent years. The results include characterization of an ecosystem’s response to a perturbation under different norms, identification of the underlying mechanisms of long transients, and transient behaviors in various models that are subject to spatial-temporal heterogeneity. This session aims to bring researchers who have experience working on transient dynamics together to communicate and advocate future endeavors in investigating the transients. Also, such a session may hopefully stimulate and initiate possible collaborations on the theme and related topics." Sunday December 4  (Duchesse) 9:00 - 9:30 Gail Wolkowicz (McMaster University), Transient oscillations induced by delayed growth response in the chemostat 9:30 - 10:00 Michael Yi Li (University of Alberta), Transient Oscillations that Are Robust in a Model for Immune Responses to Viral Infections 10:00 - 10:30 Stephanie Portet (University of Manitoba), Impact of noise on the regulation of intracellular transport of intermediate filaments 15:30 - 16:00 Pei Yu (Western University), Complex Bifurcations of a Predator-Prey System with Allee Effect 16:00 - 16:30 Sue Ann Campbell (University of Waterloo), Dynamics of a Diffusive Nutrient-Phytoplankton-Zooplankton Model with Spatio-Temporal Delay 16:30 - 17:00 Rongsong Liu (University of Wyoming), Multiple dose pharmacokinetic models predict bioavailability of toxins in vertebrate herbivores 17:00 - 17:30 Jacques Belair (University of Montreal), Modelling the use of Fangsang shelter hospitals in Wuhan 17:30 - 18:00 Ao Li (York University), Transient disease dynamics of some SIR models over patchy environments Monday December 5  (Duchesse) 15:00 - 15:30 Hao Wang (University of Alberta), Multi-scale and qualitative analysis of a stoichiometric algae model 15:30 - 16:00 Ankai Liu (Queen’s University), Properties of long transient dynamic and its applications 16:00 - 16:30 Huaiping Zhu (York University), Dynamics of the asymptomatic infection in the spread of SARS-CoV-2 Schedule to be determined David Earn (McMaster University), Duchesse Lin Wang (University of New Brunswick), Duchesse Variational Analysis: Applications and Theory Org: Walaa Moursi and Henry Wolkowicz (Waterloo) This session provides an excellent opportunity for connecting researchers from different areas of optimization to interact, share recent research progress and discuss possible directions of future collaboration. Areas of interest range from theoretical results to applications in statistics and computer science. Friday December 2  (Austen) 11:00 - 11:30 Henry Wolkowicz (Waterloo), Regularized Nonsmooth Newton Algorithms for Best Approximation, with Applications 11:30 - 12:00 Andersen Ang (Waterloo), Multigrid proximal gradient method for convex optimization 13:00 - 13:30 Hristo Sendov (Western), Polar convexity and a refinement of the Gauss-Lucas theorem 13:30 - 14:00 Walaa Mousi (Waterloo), How to project onto the intersection of a closed affine subspace and a hyperplane 14:00 - 14:30 Kennedy Idu (Toronto), On Approximating Zeros of Monotone Operators in Banach Spaces 14:30 - 15:00 Phillip Braun (Western), On the Hadamard-Fischer's Inequality, the Inclusion-Exclusion Formula, and Bipartite Graphs 15:00 - 15:30 Haesol Im (Waterloo), Revisiting Degeneracy, Strict Feasibility, Stability in Linear Programming 15:30 - 16:00 Fei Wang (Waterloo), Singularity degree for non-facially exposed faces Where are we on the mathematics and statistics education hype curve? Org: Andie Burazin (University of Toronto Mississauga) and Diana Skrzydlo (University of Waterloo) Active Learning. Inquiry-based Learning. Two-stage Assessments. Ungrading. Team-based Learning. Problem-based Learning. Peer Assessments. Mastery-based Learning … What works and what does not? How do you choose which ones to implement in a course? Miroslav Lovric (McMaster) gave a fantastic 2022 CMS Summer Meeting Education Plenary in which he made the audience think about where we, teaching practitioners, are on the mathematics and statistics education “Gartner hype cycle”, a curve which represents the maturity of emerging trends. Are we following new trends because they are talked about the most? There are a lot of fun and innovative educational approaches being used in the design of mathematics and statistics courses and its assessments. But, how good are these approaches when it comes to teaching and learning in mathematics and statistics? How can the success of these approaches be measured and validated? In this session, presenters will share educational research results and the methods to validate educational approaches. As well, the participants will be asked to engage in a tasteful and informal discussion to conclude the session. Saturday December 3  (Whistler) 8:00 - 8:30 Dan Wolczuk (University of Waterloo), Fact, Fiction, or Fad? 8:30 - 9:00 Peter Taylor (Queen’s University), How are we doing? 9:00 - 9:30 Amanda Harsy, Marie Meyer, Michael Smith, Cara Sulyok, Grading with a Growth Mindset 9:30 - 10:00 Samantha-Jo Caetano (University of Toronto), Using student feedback to tailor your teaching. 10:00 - 10:30 Julie Jenkins (McMaster University) Schedule to be determined Diana Skrzydlo (University of Waterloo), Discussion and Next Steps, Whistler