Codes and Expansions (CodEx) Seminar
An international remote seminar on the theory and applications of harmonic analysis, combinatorics, and algebra.
When:
Tuesdays at 10 a.m. PDT / 1 p.m. EDT / 17:00 UTC / 19:00 CEST
Where:
Zoom. To access the Zoom link, please join the mailing list by entering your information here.
Recorded talks are on our YouTube channel.
Organized by:
John Jasper (Air Force Institute of Technology)
Emily J. King (Colorado State University)
Dustin G. Mixon (The Ohio State University)
Michael A. Perlmutter (Boise State University)
Thanks to Joey Iverson (Iowa State University), who was a cofounding co-organizer through July 2024.
Upcoming talks:
| July 15, 2025 | [Summer Student and Postdoc Talks] Sawyer Robertson (UC San Diego): "Effective Resistance and Conductance for Probability Measures on Graphs" Abstract |
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| July 22, 2025 | [Summer Student and Postdoc Talks] Kean Fallon (Iowa State University) |
| July 29, 2025 | [NO TALK] |
| August 5, 2025 | [Summer Student and Postdoc Talks]
Elena (Xinyi) Wang (TU Graz)
Ishika Ghosh (Michigan State University) |
| August 12, 2025 | [Summer Student and Postdoc Talks] Dom Vito Briones (Nanyang Technological University) |
| August 19, 2025 | [Summer Student and Postdoc Talks] Ido Hadi (Tel Aviv University) |
| August 26, 2025 | [Summer Student and Postdoc Talks] Paulina Hoyos (University of Texas) |
Past talks:
| May 6, 2025 | Andreas Tillmann (TU Clausthal): "A Discrete Optimization Approach to Matrix Sparsification" Abstract |
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| April 29, 2025 | Assaf Goldberger (Tel Aviv University): "Switching Automorphisms and centralizer algebras with commutative and non-commutative coefficients, a cohomological point of view" Abstract | Slides | Video |
| April 15, 2025 | Dorsa Ghoreishi (Saint Louis University): "Frames and Phase retrieval for Vector Bundles" Abstract | Video |
| April 8, 2025 | Sanjukta Krishnagopal (UC Santa Barbara): "Graph signal processing: from machine learning theory to simplicial complexes" Abstract |
| April 1, 2025 | Raj Rao Nadakuditi (University of Michigan): "mproved very sparse matrix completion using an intentionally randomized ‘asymmetric’ SVD" Abstract | Video |
| March 25, 2025 | Radu Balan (University of Maryland) : "Factorization of positive-semidefinite operators with absolutely summable entries" Abstract | Video |
| March 11, 2025 | Steve Flammia (Virginia Tech): "A Constructive Approach to Zauner's Conjecture via the Stark Conjectures" Abstract | Video |
| March 4, 2025 | Alexandra Kolla (UC Santa Cruz): "Quantum Max Cuts and Local Hamiltonians" Abstract | Video |
| February 25, 2025 | Ryan Matzke (Vanderbilt University): "Energy Minimization: Concentration and Dispersion of Charge" Abstract | Video |
| February 11, 2025 | Vardan Papyan (University of Toronto): "Block Coupling and its Correlation with Generalization in LLMs and ResNets" Abstract | Video |
| February 4, 2025 | Anna Little (University of Utah): "Constructing Features from Data: Dimension Reduction, Interpretability, and Invariants" Abstract | Video |
| January 28, 2025 | Harm Derksen (Northeastern University): "Invariant Theory and Complexity" Abstract | Video |
| December 3, 2024 | Tegan Emerson (Pacific Northwest National Laboratory): "Fourier-Ring Descriptors and Measuring Rotational Equivariance" Abstract |
| November 19, 2024 | Sarah Tymochko (UCLA): "Applications of Topological Data Analysis to Resource Coverage" Abstract | Video |
| November 12, 2024 | Ilya Krishtal (Northern Illinois University): "Kadec-type theorems for unit-norm frames and atomic decompositions" Abstract | Video |
| November 5, 2024 | Tamir Bendory (Tel Aviv University): "Estimation over groups and the unitary matrix retrieval problem" Abstract | Video |
| October 29, 2024 | Martin Ehler (University of Vienna): "Spherical designs: from points to curves and beyond" Abstract | Video |
| October 22, 2024 | Yousef Qaddura (The Ohio State University): "Stable Weighted Phase Retrieval" Abstract | Video |
| October 15, 2024 | Soledad Villar (Johns Hopkins University): "Galois theory and low-rank matrix completion meet equivariant machine learning" Abstract | Video |
| October 8, 2024 | Jamie Haddock (Harvey Mudd College): "Randomized Kaczmarz Methods: Corruption, Consensus, and Concentration" Abstract | Video |
| October 1, 2024 | Stefan Steinerberger (University of Washington Seattle): "Conformally Rigid Graphs" Abstract | Video |
| September 24, 2024 | Alejandro Parada-Mayorga (University of Colorado Denver): "Algebraic Neural Networks: Stability to Deformations" Abstract | Video |
| September 17, 2024 | Keaton Hamm (The University of Texas at Arlington): "Manifold Learning in Wasserstein Space" Abstract |
| September 10, 2024 | Dmitriy Kunisky (Johns Hopkins University): "Computational hardness of testing for graph lifts and certifying properties of random regular graphs" Abstract | Video |
| August 27, 2024 | Igor Balla (Masaryk University): "Equiangular lines via matrix projection" Abstract | Video |
| July 30, 2024 | [Summer Student and Postdoc Talks]
Enrique Gomez-Leos (Iowa State University):
"A new infinite family of equiisoclinic tight fusion frames" Abstract | Video
Sarah McCarty (Iowa State University): "Shallow ReLU Neural Networks and their Representations of Piecewise Linear Functions" Abstract | Video |
| July 23, 2024 | [Summer Student and Postdoc Talks] Enrique Alvarado (UC Davis / Iowa State University): "Parameter Selection in Mapper" Abstract | Video |
| July 16, 2024 | [Summer Student and Postdoc Talks] George Kevrekidis (Johns Hopkins): "Neural Network Representations of Multiphase Equations of State" Abstract |
| July 9, 2024 | [Summer Student and Postdoc Talks] Chad Berner (Iowa State University): "Frame-like Fourier expansions for finite Borel measures" Abstract | Video |
| July 2, 2024 | [Summer Student and Postdoc Talks] Hannah Friedman (UC Berkeley): "Optimization over Two Embeddings of the Grassmannian" Abstract | Video |
| May 14, 2024 | Joey Iverson (Iowa State University): "The optimal arrangement of 2d lines in C^d" Abstract |
| May 7, 2024 | Ole Christensen (Technical University of Denmark): "Frames and redundancy" Abstract| Video |
| April 23, 2024 | Nathaniel Johnston (Mount Allison University): "A New Formula for the Determinant" Abstract | Video |
| April 16, 2024 | Mátyás Domokos (Alfréd Rényi Institute of Mathematics): "Degree bounds for separating invariants" Abstract | Video |
| April 2, 2024 | Jonathan D.H. Smith (Iowa State University) "Codes, Errors, and Loops" Abstract | Video |
| March 26, 2024 | Elizabeth Munch (Michigan State University) "Comparing Embedded Shapes Using Topological Summaries" Abstract | Video |
| March 19, 2024 | Demetrio Labate (University of Houston) "Provable approximations of multivariate functions on smooth manifolds using deep ReLU neural networks" Abstract | Video |
| March 5, 2024 | Joe Kileel (University of Texas at Austin): "Covering Number of Real Algebraic Varieties and Beyond" Abstract | Video |
| February 27, 2024 | Samuel Ballas (Florida State University) "Frame theory for vector bundles" Abstract | Video |
| February 20, 2024 | Abiy Tasissa (Tufts University) "A dual basis approach to classical multidimensional scaling" Abstract | Video |
| February 13, 2024 | Joseph Thomas Iosue (University of Maryland) "Projective toric designs, difference sets, and quantum state designs" Abstract | Video |
| February 6, 2024 | Francesca Bartolucci (TU Delft): "A Tour in Wavelet Phase Retrieval" Abstract | Video |
| January 30, 2024 | Oscar Mickelin (Princeton University): "A fast algorithm for Fourier-Bessel expansions" Abstract | Video |
| January 23, 2024 | Edinah Koffi Gnang (Johns Hopkins University): "From graph decomposition to matrix apportionment and back" Abstract |
| December 5, 2023 | Hannah Lawrence (MIT): "Learning Polynomial Problems with SL(2,R)-Equivariance" Abstract | Video |
| November 14, 2023 | Michael Catanzaro (Geometric Data Analytics, Inc.): "Topological Parallax: A Geometric Specification for Deep Perception Models" Abstract | Video |
| November 7, 2023 | Daniel Freeman (St Louis University): "Recovering vectors from saturated measurements" Abstract | Video |
| October 31, 2023 | Sylvester Eriksson-Bique (University of Jyväskylä): "BiLipschitz Embeddings of Manifolds, Orbifolds and Metric Spaces" Abstract | Video |
| October 24, 2023 | Ben Blum-Smith (Johns Hopkins University): "Estimating a signal corrupted by a cyclic group action plus noise" Abstract | Video |
| October 17, 2023 | Shira Faigenbaum-Golovin (Duke University): "Can We Approximate It? Manifolds, Refinable Functions, and the Approximation Power of Neural Networks" Abstract | Video |
| October 10, 2023 | Dan Edidin (University of Missouri): "The second moment and the sparse multi-reference alignment problem" Abstract | Video |
| October 3, 2023 | Courtney Paquette (McGill University): "Hitting the High-D(imensional) Notes: An ODE for SGD learning dynamics in high-dimensions" Abstract | Video |
| September 26, 2023 | Mark Iwen (Michigan State): "Sparse Spectral Methods for Solving High-Dimensional and Multiscale Elliptic PDEs" Abstract | Video |
| September 19, 2023 | Robert Webber (Caltech): "Rocket-propelled Cholesky: Addressing the challenges of large-scale kernel computations" Abstract | Video |
| September 12, 2023 | Steven Gortler (Harvard University): "Invariant Embeddings" Abstract | Video |
| August 22, 2023 | [Summer Student and Postdoc Talks] Efstratios Tsoukanis (University of Maryland): "Coorbit Invariant Embeddings" Abstract | Video |
| August 15, 2023 | [Summer Student and Postdoc Talks] Daniel Packer (The Ohio State University): "Max Filtering with Reflection Groups" Abstract | Video |
| August 8, 2023 | [Summer Student and Postdoc Talks] Arun Suresh (University of Missouri): "On the Generic Crystallographic Phase Retrieval Problem" Abstract | Video |
| August 1, 2023 | [Summer Student and Postdoc Talks] Christopher Dock (Tufts University): "Instability of Quantum Tomography with Bounded Operators" Abstract | Slides | Video |
| July 25, 2023 | [Summer Student and Postdoc Talks] David Bartusel (RWTH Aachen): "The role of connectedness in STFT phase retrieval" Abstract | Video |
| July 18, 2023 | [Summer Student and Postdoc Talks] Keenan Eikenberry (Arizona State University): "Markov Kernels Valued in Wasserstein Spaces" Abstract | Video |
| July 11, 2023 | [Summer Student and Postdoc Talks] Mitchell Taylor (UC Berkeley): "Stable phase retrieval in function spaces" Abstract | Video |
| June 27, 2023 | [Summer Student and Postdoc Talks] Pu-Ting Yu (Georgia Tech): "Convergence of Frame Series" Abstract | Video |
| June 22, 2023 | [Summer Student and Postdoc Talks] Donggeun Ryou (University of Rochester): "Near-Optimal Restriction Estimates for Cantor Sets on the Parabola" Abstract | Video |
| June 14, 2023 | [Summer Student and Postdoc Talks] Dylan Domel-White (Vanderbilt University): "Algorithms and Guarantees for One-bit Phase Retrieval" Abstract | Video |
| June 6, 2023 | [Summer Student and Postdoc Talks] Marc Christian Zimmermann (University of Cologne): "Critical lattices in the Gaussian core model" Abstract | Video |
| May 30, 2023 | [Summer Student and Postdoc Talks] Josue Tonelli-Cueto (University of Texas San Antonio / Johns Hopkins University): "Condition Numbers and Probability for Explaining Algorithms" Abstract | Video |
| May 2, 2023 | Jakob Lemvig (Technical University of Denmark - DTU): "The Gabor frame set problem for Hermite functions" Abstract | Video |
| April 25, 2023 | James Murphy (Tufts University): "Intrinsically Low-Dimensional Models for Wasserstein Space: Geometry, Statistics, and Learning" Abstract | Video |
| April 18, 2023 | Margaret Cheney (Colorado State University): "Tuning to Target Resonances" Abstract | Video |
| April 11, 2023 | Shahaf Nitzan (Georgia Tech): "A set with no Riesz basis of exponentials" Abstract |
| April 4, 2023 | Bill Martin (Worcester Polytechnic Institute): "Quantum isomorphic graphs from association schemes" Abstract | Video |
| March 28, 2023 | Dustin G. Mixon (The Ohio State University): "Bilipschitz invariants" Abstract | Video |
| March 21, 2023 | Rachel Greenfeld (Institute for Advanced Study, Princeton): "The structure of translational tilings" Abstract |
| March 7, 2023 | Krystal Guo (University of Amsterdam and QuSoft): "Strongly regular graphs with a regular point" Abstract | Video |
| February 28, 2023 | Judith Packer (University of Colorado Boulder): "Wavelets coming from representations of graph C*-algebras" Abstract | Slides | Video |
| February 21, 2023 | Nadav Dym (Technion): "Efficient Invariant Embeddings for 3D point sets" Abstract | Video |
| February 14, 2023 | Alhussein Fawzi (Google DeepMind): "Discovering faster matrix multiplication algorithms with deep reinforcement learning" Abstract | Video |
| February 7, 2023 | Ursula Molter (Universidad de Buenos Aires): "Best 'good' subspace data fitting" Abstract | Video |
| January 31, 2023 | Ingemar Bengtsson (Stockholm University): "Pythagorean SICs" Abstract | Video |
| January 24, 2023 | Oleg Musin (University of Texas Rio Grande Valley) "Majorization and optimal spherical configurations" Abstract | Video |
| January 17, 2023 | Stefan Steinerberger (University of Washington): "Graphical Designs" Abstract | Slides | Video |
| December 6, 2022 | Bernhard Bodmann (University of Houston): "Spotting irregularities with reaction and diffusion: A scattering transform on graphs and extremes in log-normal random walks" Abstract | Video |
| November 29, 2022 | Tom Needham (Florida State University): "Symplectic Geometry and Fusion Frames" Abstract | Video |
| November 15, 2022 | Felix Voigtländer (Catholic University Eichstätt-Ingolstadt): "Sampling numbers of the Fourier-type Barron spaces" Abstract | Video |
| November 8, 2022 | Andreas Heinecke (Yale-NUS College): "Unsupervised statistical learning in ancient economic history" Abstract | Video |
| November 1, 2022 | Carlos Cabrelli (University of Buenos Aires): "Frames by Orbits of Operators and Model Spaces" Abstract | Video |
| October 25, 2022 | Kiyoto Yoshino (Tohoku University): "The Lemmens-Seidel conjecture for base size 5" Abstract | Video |
| October 18, 2022 | Doug Cochran (Arizona State University): "Geometry of Invariants for Generalized Coherence Tests" Abstract | Video |
| October 11, 2022 | Danylo Yakymenko (Institute of Mathematics of NAS of Ukraine): "On the continuous Zauner conjecture" Abstract | Video | Slides |
| October 4, 2022 | Dardo Goyeneche (Universidad de Antofagasta): "Mutually unbiased frames" Abstract | Video | Slides |
| September 27, 2022 | Pete Casazza (University of Missouri): "Piecewise Scalable Frames" Abstract | Video |
| September 20, 2022 | Travis Russell (Dartmouth College): "Quantum correlations via Operator Systems" Abstract | Video |
| September 6, 2022 | Michael Perlmutter (University of California Los Angeles): "Group Invariant Scattering on Graphs, Manifolds, and Other Measure Spaces" Abstract | Video | Slides |
| August 30, 2022 | John Jasper (Air Force Institute of Technology): "Equi-isoclinism from symmetry" Abstract | Slides | Video |
| August 23, 2022 | Jameson Cahill (University of North Carolina at Wilmington): "Max filtering" Abstract | Video |
| August 16, 2022 | [Summer Student and Postdoc Talks] Matthias Wellershoff (University of Maryland): "Uniqueness of phase retrieval from sampled Gabor measurements: a short overview" Abstract | Video |
| August 9, 2022 | [Summer Student and Postdoc Talks] Vicky Kouni (University of Athens): "Analysis Compressed Sensing: from Model-Based Methods to Deep Unfolding Networks" Abstract | Video |
| July 19, 2022 | [Summer Student and Postdoc Talks] Victor Bailey (Georgia Tech) "Frames via Unilateral Iterations of Bounded Operators" Abstract | Video |
| July 12, 2022 | [Special Session on Recent Advances in Packing] Shujie Kang (University of Texas at Arlington): "Non-informationally complete Gabor POVMs" Abstract | Video |
| July 5, 2022 | [Special Session on Recent Advances in Packing] Shuxing Li (Simon Fraser University): "Packings of Partial Difference Sets" Abstract | Video |
| June 28, 2022 | [Summer Student and Postdoc Talks] Simon Ruetz (Universität Innsbruck): "Adapted variable density subsampling for compressed sensing" Abstract | Video |
| June 21, 2022 | [Special Session on Recent Advances in Packing] Xinyu (Norah) Tan (Duke University): "Quadratic Form Diagonal Gates and Grassmannian Packings" Abstract | Video Zilin Jiang (Arizona State University): "Forbidden subgraphs and spherical two-distance sets" Abstract | Video |
| June 14, 2022 | [Special Session on Recent Advances in Packing] Dustin G. Mixon (The Ohio State University): "An Approximate Positivstellensatz" Abstract | Video Kasso Okoudjou (Tufts University): "Minimizing the p-frame potentials" Abstract | Video |
| June 7, 2022 | [Special Session on Recent Advances in Packing] Gary Greaves (Nanyang Technological University): "Hermitian matrices of roots of unity and their characteristic polynomials" Abstract | Video Matt Fickus (Air Force Institute of Technology): "Harmonic Grassmannian codes" Abstract | Video |
| May 31, 2022 | [Special Session on Recent Advances in Packing] Emily J. King (Colorado State University): "The Combinatorics of Equiangular Tight Frame Substructures" Abstract | Video Alexander Barg (University of Maryland): "Bounds for the sum of distances of spherical sets of small size" Abstract | Video |
| May 24, 2022 | [Special Session on Recent Advances in Packing] Gene Kopp (Purdue University/Louisiana State University): "A step toward a constructive proof of Zauner's conjecture" Abstract | Video |
| May 3, 2022 | Amit Singer (Princeton University): "Method of moments in cryo-electron microscopy" Abstract | Video |
| April 26, 2022 | Doug Hardin and Nate Tenpas (Vanderbilt University): "Linear programming bounds for discrete periodic energy problems" Abstract | Video |
| April 19, 2022 | Deanna Needell (University of California Los Angeles): "Online nonnegative matrix factorization and applications" Abstract | Video |
| April 12, 2022 | Hau-Tieng Wu (Duke University): "Some recent progress in diffusion based manifold learning and its applications" Abstract | Video |
| April 5, 2022 | Simon Foucart (Texas A&M University): "Integrating Observation Errors in Optimal Recovery" Abstract |
| March 29, 2022 | Felix Krahmer (Technische Universität München): "The convex geometry of blind deconvolution revisited" Abstract | Video |
| March 22, 2022 | Soledad Villar (Johns Hopkins University): "Equivariant machine learning and dimensional analysis" Abstract | Video |
| March 15, 2022 | Sinan Gunturk (New York University): "Approximation with one-bit polynomials and one-bit neural networks" Abstract | Video |
| March 8, 2022 | Igor Balla (Hebrew University of Jerusalem): "Equiangular lines and regular graphs" Abstract | Video |
| March 1, 2022 | Jonathan Jedwab (Simon Fraser University): "Perfect sequence covering arrays" Abstract | Slides | Video |
| February 22, 2022 | Sho Suda (National Defense Academy of Japan) "Two topics on equiangular tight frames" Abstract | Video |
| February 15, 2022 | Tim Kunisky (Yale University): "Dual bounds for the positive definite functions approach to mutually unbiased bases" Abstract | Video |
| February 8, 2022 | Darrin Speegle (Saint Louis University): "Simultaneous Dilation and Translation Tilings of R^n" Abstract | Video |
| February 1, 2022 | Henry Adams (Colorado State University): "The topology of projective codes" Abstract | Slides | Video |
| January 25, 2022 | Lutz Warnke (University of California San Diego): "The Density of Costas Arrays Decays Exponentially" Abstract | Video |
| January 18, 2022 | Bernd Sturmfels (University of California Berkeley and Max Planck Institute for Mathematics in the Sciences Leipzig): "Linear PDE with Constant Coefficients" Abstract | Slides |
| December 7, 2021 | Rima Alaifari (ETH Zürich): "(Non-)uniqueness of phase recovery from Gabor and wavelet transform measurements" Abstract | Video |
| November 30, 2021 | Dan Edidin (University of Missouri): "Dihedral multi-reference alignment" Abstract | Video | Slides |
| November 16, 2021 | Wojciech Czaja (University of Maryland): "Fourier Scattering as Efficient Feature Extraction" Abstract | Video |
| November 9, 2021 | Monika Dörfler (Universität Wien): "Structure and Effective Dimensionality of Time Series Data Sets" Abstract |
| November 2, 2021 | Alexander Powell (Vanderbilt University): "Dynamical Duals and Error Diffusion" Abstract |
| October 26, 2021 | Markus Grassl (International Centre for Theory of Quantum Technologies, University of Gdańsk): "Computing SIC-POVMs using Permutation Symmetries and Stark Units" Abstract | Video | Slides |
| October 19, 2021 | Joey Iverson (Iowa State University): "Equiangular lines over finite fields" Abstract | Video | Slides |
| October 12, 2021 | Clay Shonkwiler (Colorado State University): "A Lie Algebraic Perspective on Frame Theory" Abstract | Video |
| October 5, 2021 | X.Y. Han (Cornell University): "Prevalence of Neural Collapse during the terminal phase of deep learning training" Abstract | Video |
| September 28, 2021 | Boumediene Et-Taoui (Université de Haute Alsace): "A survey on complex conference matrices" Abstract | Video | Slides |
| September 21, 2021 | Naoki Saito (University of California Davis): "Multiscale Graph Basis Dictionaries" Abstract | Video |
| September 14, 2021 | Tom Needham (Florida State University): "Applications of Symplectic Geometry to Frame Theory" Abstract | Video | Slides |
| September 7, 2021 | Armenak Petrosyan (Georgia Institute of Technology): "Integral neural networks with weight penalization" Abstract | Video |
| August 31, 2021 | Mauro Maggioni (Johns Hopkins University): "Learning Interaction laws in particle- and agent-based systems" Abstract | Video |
| August 24, 2021 | Longxiu Huang (University of California Los Angeles): "CUR Decompositions and their Applications" Abstract | Video |
| August 10, 2021 | Romanos Diogenes-Malikiosis (Aristotle University of Thessaloniki): "Recent developments in the discrete Fuglede conjecture" Abstract | Slides | Video |
| August 3, 2021 | Matt Herman (Fourier Genetics): "Fourier Analysis on the Genome" Abstract | Video | Slides |
| July 27, 2021 | Nate Strawn (Georgetown University): "3D Filament Plots from Optimally Smooth 2D Andrew's Plots" Abstract | Slides | Video |
| July 13, 2021 | [Summer Student and Postdoc Talks] Davi Castro-Silva (Universität zu Köln): "Geometrical sets with forbidden configurations" Abstract | Video | Slides |
| July 6, 2021 | [Summer Student and Postdoc Talks] Nathan Lindzey (University of Colorado Boulder): "Discrete Harmonic Analysis on Matchings" Abstract | Video |
| June 29, 2021 | Xuemei Chen (University of North Carolina Wilmington): "Frame optimization with projective Riesz kernel" Abstract | Video |
| June 22, 2021 | [Summer Student and Postdoc Talks] Nadiia Derevianko (Universität Göttingen): "Estimation of Signal Parameters by Iterative Rational Approximation" Abstract | Video |
| June 15, 2021 | Michael Perlmutter (University of California Los Angeles): "Convolutional Networks on (Directed) Graphs via the Graph Fourier Transform" Abstract | Video | Slides |
| June 8, 2021 | Mikhail Ganzhinov (Aalto University): "Infinite families of optimal biangular line packings" Abstract | Video |
| June 1, 2021 | [Summer Student and Postdoc Talks] Joseph Cummings (University of Kentucky): "Phylogenetic Networks" Abstract | Video |
| May 25, 2021 | Elina Robeva (University of British Columbia): "Orthogonal and Incoherent Tensor decomposition" Abstract | Video |
| May 18, 2021 | Radu Balan (University of Maryland):"Embeddings of Metric Spaces induced by Permutation Groups" Abstract | Video |
| May 11, 2021 | Steve Butler (Iowa State University): "Hadamard diagonalizable graphs of small order" Abstract | Video |
| May 4, 2021 | Cynthia Vinzant (North Carolina State University): "The geometry of spectrahedra" Abstract | Video | Slides |
| April 27, 2021 | Azita Mayeli (City University of New York, the Graduate Center): "Exponential completeness and φ-approximate orthogonality on the unit ball" Abstract |
| April 20, 2021 | Marcin Bownik (University of Oregon): "Multiplication-invariant operators and the classification of abelian group frames" Abstract | Video | Slides |
| April 13, 2021 | Gary Greaves (Nanyang Technological University): "Real equiangular line systems in low dimensions" Abstract | Video | Slides |
| April 6, 2021 | Robert Calderbank (Duke University): "Coherent Noise" Abstract | |
| March 30, 2021 | Vignon Oussa (Bridgewater State University): "Why are topics such as differential geometry and representation theory useful to frame theory?" Abstract | Video |
| March 23, 2021 | Zilin Jiang (Arizona State University): "Spherical two-distance sets and spectral theory of signed graphs" Abstract " Video |
| March 16, 2021 | Daniel Freeman (St Louis University): "Discretizing L_p norms" Abstract | Video |
| March 9, 2021 | Keaton Hamm (The University of Texas at Arlington): "Column Selection and You" Abstract | Video |
| March 2, 2021 | Ram Zamir (Tel Aviv University): "Asymptotic Frame Theory for Analog Coding" Abstract | Video | Slides |
| February 23, 2021 | Joshua A. Grochow (University of Colorado Boulder): "Codes and Expansions in Algorithms for Matrix Multiplication" Abstract | Video | Slides |
| February 16, 2021 | Karin Schnass (Universität Innsbruck): "Random submatrices with non-uniformly distributed supports" Abstract | Video |
| February 9, 2021 | Eugenio Hernández (Universidad Autónoma de Madrid): "Spaces invariant under unitary representations and the bracket" Abstract | Slides | Video |
| February 2, 2021 | Emily J. King (Colorado State University): "A Potpourri of Projective 2-Designs" Abstract | Video | Slides |
| January 26, 2021 | Steven Flammia (AWS Center for Quantum Computing): "Ghosts, Necromancy, and Zauner's Conjecture" Abstract | Video |
| December 8, 2020 | Chris Heil (Georgia Tech): "Frames, Erasures, and Excess in Infinite Dimensions" Abstract | Video | Slides |
| December 1, 2020 | Hartmut Führ (RWTH Aachen): "Frames of translates and the bandwidth intuition" Abstract | Video | Slides |
| November 17, 2020 | Philipp Petersen (Universität Wien): "Functions with structured singularities" Abstract | Video |
| November 10, 2020 | Alex Cloninger (University of California at San Diego): "Fast Statistical and Geometric Distances Between Families of Distributions" Abstract | Video |
| November 3, 2020 | Gerlind Plonka-Hoch (Universität Göttingen): "Optimal Rank-1 Hankel Approximation of Matrices" Abstract | Video | Slides |
| October 27, 2020 | Akram Aldroubi (Vanderbilt University): "Transport transforms for data analysis and machine learning" Abstract | Video |
| October 20, 2020 | Dustin G. Mixon (The Ohio State University): "Symmetry and optimality in codes" Abstract | Video |
| October 13, 2020 | John J. Benedetto (University of Maryland): "Spectral super-resolution and unique extensions for complex measures" Abstract | Video |
| October 6, 2020 | Shahaf Nitzan (Georgia Tech): "A few remarks on 'good' exponential Riesz bases" Abstract |
| September 29, 2020 | Boris Bukh (Carnegie Mellon University): "Ranks of matrices with few distinct entries" Abstract | Video |
| September 22, 2020 | Eric Weber (Iowa State University): "Conjugate Phase Retrieval in Paley-Wiener Space" Abstract | Video | Slides |
| September 15, 2020 | Bill Martin (Worcester Polytechnic Institute): "Schoenberg's Theorem and Association Schemes" Abstract | Video | Slides |
| September 8, 2020 | Hanmeng (Harmony) Zhan (York University): "DRACKNs and their applications in quantum information" Abstract | Video |
| September 1, 2020 | Chris Manon (University of Kentucky): "Spaces of Eigenvalues" Abstract | Video |
| August 25, 2020 | Frank Vallentin (Universität zu Köln): "Coloring the Voronoi tessellation of lattices" Abstract | Video |
| August 18, 2020 | David Gross (Universität zu Köln): "Representation theory of the Clifford group, with sundry applications" Abstract | Video |
| August 11, 2020 | Kasso Okoudjou (Tufts University): "The search for universal minimizers of p-frame potentials" Abstract | Video |
| August 4, 2020 | Marcus Appleby (University of Sydney): "SICs and Number Theory" Abstract | Video |
| July 28, 2020 | Matt Fickus (Air Force Institute of Technology): "Mutually Unbiased Equiangular Tight Frames" Abstract | Slides | Video |
| July 21, 2020 | Vern Paulsen (University of Waterloo): "Entanglement Breaking Maps and Zauner's Conjecture" Abstract | Video |
| July 14, 2020 | Afonso S. Bandeira (ETH Zürich): "Hardness of refuting coloring in random graphs and quiet computational planting" Abstract | Video |
| July 7, 2020 | Bernhard Bodmann (University of Houston): "Polynomial embeddings as cheat codes for a real Game of Sloanes" Abstract | Video |
| June 30, 2020 | Pete Casazza (University of Missouri): "Two Distance Sets" Abstract | Video |
| June 23, 2020 | Alex Iosevich (University of Rochester): "On point configurations and frame theory" Abstract | Video | Slides |
| June 9, 2020 | Gene Kopp (University of Bristol): "SIC-POVM existence and the Stark conjectures" Abstract | Video |
| June 2, 2020 | Jameson Cahill (New Mexico State University): "Optimal Parseval Frames" Abstract | Video |
| May 26, 2020 | Chris Cox (Carnegie Mellon University / Iowa State University): "Nearly Orthogonal Vectors" Abstract | Video |
| May 19, 2020 | Hans Parshall (Ohio State University / Western Washington University): "Optimal Line Packings" Abstract | Video |