**ORGANIZER:** DANIEL SANZ-ALONSO, Assistant Professor, Department of Statistics

**TIME AND VENUE:** Thursdays from 4:00-5:00 PM, in Jones 226, 5747 South Ellis Avenue (unless otherwise indicated in **BLUE**). For further information and inquiries about building access for persons with disabilities, please email Zellencia Harris at zellenciah@uchicago.edu. If you wish to subscribe to our listserv, please visit the following website: https://lists.uchicago.edu/web/subscribe/cam_colloquium."

**PLEASE NOTE**: This colloquium supersedes the **Scientific and Statistical Computing Seminar** that met from Fall 2011–Spring 2017.

## WINTER QUARTER 2019

SPRING QUARTER 2020

APRIL

**All presentations previously scheduled for the month of April have been RESCHEDULED for a later date.**

MAY

**FRIDAY, May 1, 2020, at 11:00 AM, in Jones 303, 5747 S. Ellis Avenue**

FRANCIS CHUNG

**,**Department of Mathematics, University of Kentucky

"TBA"

THURSDAY, May 14, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

MATTHIAS MORZFELD, Department of Mathematics, University of Arizona

"TBA"

THURSDAY, May 21, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

TIN-YAU TAM, Department of Mathematics and Statistics, University of Nevada, Reno

"TBA"

THURSDAY, May 28, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

PER A. MYKLAND, Department of Statistics, University of Chicago

"TBA"

JUNE

AUTUMN QUARTER 2019

OCTOBER

THURSDAY, October 10, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

ALEXANDER WATSON, Mathematics Department, Duke University

**"Two-Dimensional Topological Insulators Beyond Periodic Structures"**

THURSDAY, October 17, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

GABOR PATAKI, Department of Statistics & Operations Research, University of North Carolina

**"Combinatorial Characterizations in Semidefinite Programming Duality: How Elementary Row Operations Help"**

THURSDAY, October 24, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

NATHAN KUTZ, Department of Applied Mathematics, University of Washington

**"Coordinates, Governing Equations and Limits of Model Discovery"**

THURSDAY, October 31, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

DANIELA CALVETTI, Department of Mathematics, Applied Mathematics and Statistics, Case Western Reserve University

**"Bayesian Hierarchical Models: Sparsity, Convexity and Models Reduction."**

NOVEMBER

THURSDAY, November 7, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

JOHN SCHOTLAND, Michigan Center for Applied and Interdisciplinary Mathematics, University of Michigan

**"Quantum Optics in Random Media"**

THURSDAY, November 14, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

GILBERT STRANG, Department of Mathematics, Massachusetts Institute of Technology

**"The Functions of Deep Learning"**

THURSDAY, November 21, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

TAMAS BUDAVARI, Department of Applied Mathematics and Statistics, Johns Hopkins Whiting School of Engineering

"**CAM Foundations of Survey Astronomy**"

DECEMBER

THURSDAY, December 5, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

CHANDRAJIT BAJAJ, Department of Computer Science & The Oden Institute of Computational Engineering and Sciences, Center for Computational Visualization, University of Texas

**"Learning the Koopman Operator for Dynamic Data"**

WINTER QUARTER 2020

JANUARY

MONDAY, January 6, 2020, at 4:00 PM, **in Jones 303, 5747 S. Ellis Avenue
Joint Seminar with Statistics**

BORIS HANIN, Department of Mathematics, Texas A&M University

"Mathematics of Deep Neural Networks"

THURSDAY, January 15, 2020, at 4:00 PM, **in Jones 303, 5747 S. Ellis Avenue
Joint Seminar with Statistics**

LISE-MARIE IMBERT-GERARD, Department of Mathematics, University of Maryland

"Wave Propagation in Inhomogeneous Media: An Introduction to Generalized Plane Waves"

THURSDAY, January 16, 2020, at 4:00 PM, **in Jones 303, 5747 S. Ellis Avenue
Joint Seminar with Statistics**

JEREMY G. HOSKINS, Mathematics Department, Yale University

"Elliptic PDEs on Regions with Corners"

THURSDAY, January 23, 2020, at 4:00 PM, **in**** Jones 303, 5747 S. Ellis Avenue
Joint Seminar with Statistics**

SHAHAR KOVALSKY, Department of Mathematics, Duke University

"Geometry + Optimization: Towards Computational Anatomy"

### FEBRUARY

MONDAY, February 3, 2020, 4:00 PM, **in**** Jones 303, 5747 S. Ellis Avenue
Joint Seminar with Statistics**

FRANCA HOFFMANN, Department of Computing and Mathematical Sciences, California Institute of Technology

"Gradient Flows: From PDE to Data Analysis."

THURSDAY, February 13, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

ALEXIS DROUOT, Department of Mathematics, Columbia University

"Mathematical Mysteries Behind Topological Insulators

THURSDAY, February 20, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

XU YANG, Department of Mathematics, University of California Santa Barbara

"Seismic Tomography, Image Segmentation and Deep Learning"

THURSDAY, February 27, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

LEONARDO ZEPEDA, Mathematics Department, University of Wisconsin-Madison

"Wide-band Butterfly Network: Sub-wavelength Imaging via Multi-frequency Neural Networks"

MARCH

THURSDAY, March 5, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

PAUL CAZEAUX, Applied Mathematics, University of Kansas

"Twists and Misfits: Mathematical Modeling for Incommensurate 2D Materials"

**CANCELED**

THURSDAY, March 12, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

ANIL DAMLE, Department of Computer Science, Cornell University

"Uniform Invariant Subspace Perturbation Theory and Applications"

**CANCELED**

THURSDAY, March 19, 2020, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

ZHIZHEN JANE ZHAO, Department of Mathematics & Department of Statistics, University of Illinois at Urbana-Champaign

"TBA"

ORGANIZER

DANIEL SANZ-ALONSO, Assistant Professor, Department of Statistics

SPRING QUARTER 2019

APRIL

THURSDAY, April 11, 2019, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

MELVIN LEOK, Department of Mathematics, University of California, San Diego

"Variational Discretizations of Gauge Field Theories Using Group-equivariant Interpolation Spaces"

THURSDAY, April 18, 2019, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

SHUYANG LING, Courant Institute of Mathematical Sciences, New York University

"Solving Inverse Problems on Networks: Graph Cuts, Optimization Landscape, Synchronization"

THURSDAY, April 25, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

MITCHELL LUSKIN, School of Mathematics, University of Minnesota

"Mathematical Modeling and Numerical Analysis for Incommensurate 2D Materials"

MAY

THURSDAY, May 2, 2019, at 4:00 PM, in Eckhart 202, 5734 S. University Avenue

PHILLIP MORRISON, Department of Physics and Institute for Fusion Studies, The University of Texas at Austin

"Structure and Computation of Magnetofluid and Other Matter Models"

**The CAM Colloquium featuring John Harlim has been moved to Friday, May 10, due to the following special lecture.**

THURSDAY, May 9, 2019, at 3:30 PM, in Kent 120, 1020 E. 58th Street

BAHADUR MEMORIAL LECTURES

IAIN JOHNSTONE, Departments of Statistics, Health Research and Policy, Stanford University

"High Dimensional Principal Component Analysis: Biases and Balms"

**FRIDAY, May 10, 2019, at 11:30 AM, in Jones 304, 5747 South Ellis Avenue**

JOHN HARLIM, Departments of Mathematics and Meterology, Institute of CyberScience, The Pennsylvania State University

"Manifold Learning Based Computational Methods"

THURSDAY, May 16, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

TINGRAN GAO, Department of Statistics, University of Chicago

"Manifold Learning on Fibre Bundles"

**THURSDAY, May 23, 2019, at 5:00 PM, in ECKHART 206, 5734 South University Avenue**

HARM DERKSEN, Department of Mathematics, University of Michigan

"Generalizations of Singular Values"

THURSDAY, May 30, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

JOE KILEEL, Program in Applied and Computational Mathematics, Princeton University

"Invariant and Tensor-based Approaches to Cryo-EM"

JUNE

**MONDAY, June 17, 2019, at 4:30 PM, in Stevanovich Center, MS 112, 5727 South University Avenue**

RTG SUMMER LECTURES 2019

DENNIS ELBRÄCHTER, University of Vienna

"Universal Sparsity of Deep ReLU Networks"

**WEDNESDAY, June 19, 2019, at 4:30 PM, in Stevanovich Center, MS 112, 5727 South University Avenue**

RTG SUMMER LECTURES 2019

JULIUS BERNER, University of Vienna

"Empirical risk minimization over deep neural networks overcomes the curse of dimensionality in the numerical approximation of Kolmogorov PDEs"

WINTER QUARTER 2019

JANUARY

THURSDAY, January 10, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

DAVID BINDEL, Department of Computer Science, Cornell University

"Stochastic Linear Algebra for Scalable Gaussian Processes"

**THURSDAY, January 17, 2019, at 4:00 PM, in Eckhart 133, 5734 S. University Avenue**

Joint Seminar with the Department of Statistics

YUEHAW KHOO, Department of Mathematics, Stanford University

"Multimarginal Optimal Transport, Density Functional Theory, and Convex Relaxation"

**TUESDAY, January 22, 2019, at 4:00 PM, in Eckhart 133, 5734 S. University Avenue**

Joint Seminar with the Department of Statistics

GAL MISHNE, Department of Mathematics, Yale University

"Local Geometric Spectral Data Analysis"

FEBRUARY

**WEDNESDAY, February 6, 2019, at 4:00 PM, in Eckhart 133, 5734 S. University Avenue**

Joint Seminar with the Department of Statistics

JONATHAN WEED, The Statistics and Data Science Center & Department of Mathematics, Massachusetts Institute of Technology

"Fast Rates and Fast Algorithms for the Wasserstein Distance"

THURSDAY, February 7, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

NICOLAS GARCIA TRILLOS, Department of Statistics, University of Wisconsin-Madison

"Large Sample Asymptotics of Spectra of Graph Laplacians and Semilinear Elliptic PDEs on Random Geometric Graphs"

**FRIDAY, February 8, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue**

SHI JIN, Institute of Natural Sciences, Shanghai Jiao Tong University

"Hypocoercivity Based Local Sensitivity Analysis for Multiscale Kinetic Equations with Uncertainties"

THURSDAY, February 14, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

NAN CHEN, Department of Mathematics, University of Wisconsin-Madison

"A Conditional Gaussian Framework for Uncertainty Quantification, Data Assimilation and Prediction of Nonlinear Turbulent Dynamical Systems"

THURSDAY, February 21, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

YUEFAN DENG, Department of Applied Mathematics & Statistics, Stony Brook University

"Machine Learning for Intelligent Multiscale Modeling of Platelet Dynamics"

THURSDAY, February 28, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

DIONISIOS MARGETIS, Department of Mathematics and Institute for Physical Science and Technology, University of Maryland

"Electromagnetic Waves on Two-dimensional Materials: A Flavor of Dispersion and Homogenization in Plasmonics"

MARCH

THURSDAY, March 7, 2019, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

LILIANA BORCEA, Department of Mathematics, University of Michigan

"Reduced Order Model for Active Array Data Processing in Inverse Scattering"

AUTUMN QUARTER 2018

OCTOBER

THURSDAY, October 4, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

BERNARD MOURRAIN, INRIA

"Tensor Decomposition and Moment Varieties"

THURSDAY, October 11, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

KE YE, Academy of Mathematics and Systems Science, Chinese Academy of Sciences

"Tensor Ranks with Applications to Complexity Theory"

THURSDAY, October 18, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

LALIT JAIN, Department of Computer Science and Engineering, University of Washington

"Adapting Sampling for Crowdfunding"

THURSDAY, October 25, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

DMITRIY DRUSVYATSKIY, Mathematics Department, University of Washington

"Convergence Rates of Stochastic Algorithms in Nonsmooth Nonconvex Optimization"

NOVEMBER

THURSDAY, November 1, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

EMIL SIDKY, Department of Radiology, The University of Chicago

"Image Reconstruction in X-ray Tomography by Large-scale Optimization"

**THURSDAY, November 8, 2018, at 4:00 PM, in Kent 120, 1028 E. 58th Street**

*No CAM Colloquium due to the following special lecture.*

**Billingsley Lectures on Probability**

Departments of Statistics and Mathematics

Reception following the seminar at 5:00 PM, in Jones 111, 5747 S. Ellis Avenue

ALLYN SLY, Department of Mathematics, Princeton University

"Phase Transitions of Random Constraint Satisfaction Problems"

**WEDNESDAY, November 14, 2018, at 1:30 PM, in Ryerson 277, 1100 E. 58th Street**

ELISA SOVRANO, CMUP, Departamento de Matemática, Faculdade de Ciências, University of Porto, Portugal

"Multiplicity of Clines for Indefinite Nonlinear Problems in Population Genetics"

THURSDAY, November 15, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

HONGKAI ZHAO, Department of Mathematics, University of California, Irvine

"Intrinsic Complexity and its Scaling Law: From Approximation of Random Vectors and Random Fields to High Frequency Waves"

THURSDAY, November 29, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

LIN LIN, Department of Mathematics, University of California, Berkeley

"Grassmann Manifold, Gauge, and Quantum Chemistry"

DECEMBER

THURSDAY, December 6, 2018, at 4:00 PM, in Jones 226, 5747 South Ellis Avenue

MILES STOUDENMIRE, Flatiron Institute

"Tensor Networks: From Quantum Physics to Applied Mathematics"

ORGANIZERS

RISI KONDOR, Associate Professor, Departments of Computer Science and Statistics

LEK-HENG LIM, Associate Professor, Department of Statistics

JONATHAN WEARE, Associate Professor, Department of Statistics and the James Franck Institute

SPRING QUARTER 2018

APRIL

TUESDAY, April 3, 2018, at 3:30 PM, in Ryerson 251, 1100 E. 58th Street

Joint meeting with the Theoretical Computer Science Seminar

LEONID GURVITS, Department of Computer Science, City College of New York

"A Poly-time DETERMINISTIC Algorithm for Simply Exponential Approximation of the Permanent of PSD Matrices and Other Cool Quantum Things"

THURSDAY, April 5, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

PANOS STINIS, Pacific Northwest National Laboratory

"Mesh Refinement and Coarse-Graining for Complex Systems"

THURSDAY, April 12, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

IRENE M. GAMBA, Department of Mathematics, The University of Texas at Austin

"Computational Deterministic Solvers for Chapman Kolmogorov Transport Equations for Binary Interactions"

MAY

THURSDAY, May 3, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

CHARLES DOERING, Center for the Study of Complex Systems (CSCS), University of Michigan

"Optimal Bounds and Extremal Trajectories for Time Averages in Nonlinear Dynamical Systems"

THURSDAY, May 10, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

MARTY GOLUBITSKY, Mathematical Biosciences Institute, Ohio State University

"Modeling by Networks"

THURSDAY, May 24, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

STEPHANE GAUBERT, Center of Applied Mathematics, Ecole Polytechnique

"Nonarchimedean Degenerations of Convex Programming — In Which Tropical Geometry Shows That Log-Barrier Interior Point Methods Are Not Strongly Polynomial"

THURSDAY, May 31, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

CHEN GREIF, Department of Computer Science, The University of British Columbia

"Iterative Solution of Saddle-Point Linear Systems"

WINTER QUARTER 2018

JANUARY

WEDNESDAY, January 10, 2018, at 2:30 PM, in Eckhart 133, 5734 S. University Avenue

Joint Seminar with the Department of Statistics

ROY LEDERMAN, The Program in Applied and Computational Mathematics, Princeton University

"Inverse Problems and Unsupervised Learning with Applications to Cryo-Electron Microscopy (cryo-EM)"

THURSDAY, January 11, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

CHRISTOPHER JONES, Department of Mathematics, The University of North Carolina

"Issues in Data Assimilation for Ocean and Sea-ice Models"

WEDNESDAY, January 17, 2018, at 2:30 PM, in Eckhart 133, 5734 S. University Avenue

Joint Seminar with the Department of Statistics

JU SUN, Department of Mathematics, Stanford University

"When Are Nonconvex Optimization Problems Not Scary?"

FRIDAY, January 19, 2018, at 2:30 PM, in Eckhart 133, 5734 S. University Avenue

Joint Seminar with the Department of Statistics

DANIEL SANZ-ALONSO, The Division of Applied Mathematics, Brown University

"Statistical and Algorithmic Robustness in Data Assimilation, Inverse Problems, and Machine Learning"

THURSDAY, January 25, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

ELINA ROBEVA, Department of Mathematics, Massachusetts Institute of Technology

"Maximum Likelihood Density Estimation under Total Positivity"

MONDAY, January 29, 2018, at 2:30 PM, in Eckhart 133, 5734 S. University Avenue

Joint Seminar with the Department of Statistics

KUI REN, Department of Mathematics and The Institute for Computational Engineering and Sciences, The University of Texas at Austin

"Hybrid Imaging with Nonlinear Physics: Modeling, Simulation and Analysis"

FEBRUARY

THURSDAY, February 8, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

DIMITRIS GIANNAKIS, Center for Atmosphere Ocean Science (CAOS), Courant Institute of Mathematical Sciences

"Spatiotemporal Pattern Extraction by Spectral Analysis of Vector-valued Observables"

THURSDAY, February 15, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

JOSEPH LANDSBERG, Department of Mathematics, Texas A&M University

"Quantum Max Flow v. Quantum Min Cut and the Geometry of Matrix Product States"

THURSDAY, February 22, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

ZHIZHEN JANE ZHAO, Department of Electrical and Computer Engineering Coordinated Science Laboratory, University of Illinois at Urbana-Champaign

"Multi-segment Reconstruction with Invariant Features"

MARCH

THURSDAY, March 1, 2018, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

CHARLES SMART, Department of Mathematics, University of Chicago

"The Abelian Sandpile and Circle Packings"

AUTUMN 2017

OCTOBER

THURSDAY, October 5, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

AGNES SZANTO, Department of Mathematics, North Carolina State University

"Certification of Approximate Roots of Ill-Posed Polynomial Systems"

THURSDAY, October 12, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

YIYING TONG, Department of Computer Science and Engineering, Michigan State University

"Discrete Covariant Derivative of Vector Ffields on Triangle Meshes"

THURSDAY, October 19, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

GUILLAUME BAL, Departments of Statistics, Mathematics, and CAMI, The University of Chicago

"Topological Protection of Perturbed Edge States"

THURSDAY, October 26, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

IGOR MEZIC, Mechanical Engineering Department, University of California Santa Barbara

"Koopman Operator Theory, Computation and Applications"

NOVEMBER

THURSDAY, November 2, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

JOHN REINITZ, Departments of Statistics, Ecology and Evolution, Molecular Genetics & Cell Biology, University of Chicago

"Biological Implications of *SO*(2,1) Symmetry in Exact Solutions of the Chemical Master Equation for a Self-Repressing Gene"

THURSDAY, November 9, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

KATHERINE NEWHALL, Department of Mathematics, University of North Carolina, Chapel Hill

"Metastability of the Nonlinear Wave Equation"

THURSDAY, November 16, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

JOHNNY GUZMÁN, Department of Applied Mathematics, Brown University

"Finite Element Methods for Interface Problems"

**WEDNESDAY, November 22, 2017, at 12:30 PM, in Jones 226, 5747 South Ellis Avenue**

KIM-CHUAN TOH, Department of Mathematics, National University of Singapore

"Highly Efficient Algorithms for Solving Lasso-type Problems based on Second-order Sparsity"

THURSDAY, November 30, 2017, at 5:00 PM, in Jones 226, 5747 South Ellis Avenue

ARVIND MURUGAN, Department of Physics, The University of Chicago

"Internal Models of the External World"

### Other Seminars of Interest

- Algebraic Geometry Seminars
- Computational Neuroscience Seminars
- Computations in Science Seminars
- Department of Computer Science Seminars
- Department of Ecology and Evolution Seminars
- Department of Human Genetics Seminars
- Department of Mathematics Seminars
- Department of Public Health Sciences Seminars
- Department of Statistics Colloquium
- Econometrics and Statistics Workshop
- Institute for Genomics & Systems Biology
- Probability and Statistical Physics Seminars
- Stevanovich Center for Financial Mathematics Seminars
- Toyota Technological Institute Colloquium