This page archives previous Colloquium and Seminars. For the current semester see either the calendar or events pages.

# Algebra and Geometry

## Fall 2020

- August 19, 2020 Janet Vassilev (UNM) Rings of differential operators in quotient rings.
- August 26, 2020 Janet Vassilev (UNM) Rings of differential operators in quotients of normal affine semigroup rings.
- September 2, 2020 Janet Vassilev (UNM) More on the k-differential operators of modules
- September 9, 2020 Galen Novello (UNM) Machine Learning

## Spring 2020

- January 22, 2020 Dimiter Vassilev (UNM) The universal approximation theorem II and geometric problems.
- January 27, 2020 Ila Varma (University of Toronto) Malle’s conjecture for octic D_4-fields.
- February 5, 2020 Dimiter Vassilev (UNM) Geometric properties of solution to some PDEs.
- February 12, 2020 Dimiter Vassilev (UNM) Geometric properties of solution to some PDEs II.
- February 19, 2020 Dimiter Vassilev (UNM) Geometric properties of solution to some PDEs III.
- February 26, 2020 Gueo Grantcharov (FIU) Non-Kaehler Calabi-Yau mainfolds and new systems for the Hull-Strominger system.
- March 4, 2020 Dimiter Vassilev (UNM) Geometric properties of solution to some PDEs III.
- March 11, 2020 Hongnian Huang (UNM) Chart Auto-encoders for manifold structured data.
- April 15, 2020 Dimiter Vassilev (UNM) Geometric properties of solution to some PDEs IV.
- April 22, 2020 Janet Vassilev (UNM) Nakayama Interiors and the Core/Hull duality.
- April 29, 2020 Dimiter Vassilev (UNM) Points on spheres and their quotients.
- May 6, 2020 Dimiter Vassilev (UNM) Points on spheres and their quotients II.

## Fall 2019

- August 28, 2019 Janet Vassilev (UNM) The ring of differential operators of a Stanley-Reisner ring.
- September 4, 2019 Hongnian Huang (UNM) Monge-Ampere equation and GAN.
- September 11, 2019 Alex Buium (UNM)
- September 18, 2019 Dimiter Vassilev (UNM) The universal approximation theorem in machine learning.
- September 25, 2019 Janet Vassilev (UNM) Some combinatorial commutative algebra.
- October 2, 2019 Hongnian Huang (UNM) Monge-Ampere equation and GAN II.
- October 16, 2019 Hongnian Huang (UNM) Monge-Ampere equation and GAN III.
- October 23, 2019 Velimir Vesselinov (Los Alamos)
- October 30, 2019 Charles Boyer (UNM) Open Problems in Sasaki Geometry
- November 6, 2019 Simone Claire Sisneros Thiry (UIUC) Problems from combinatorial number theory.
- November 13, 2019 Janet Vassilev (UNM) The ring of differential operators of normal affine semigroup rings.
- November 20, 2019 Patrick Lank (UNM) Algebraic Pseudo-Riemannian Geometry.
- November 27, 2019 Hongnian Huang (UNM) GAN and Monge-Ampere equations continuation.

## Spring 2019

- January 23, 2019 Hongnian Huang (UNM)
- January 30, 2019 Dimiter Vassilev (UNM) Non-local geometric PDEs and the non-local Yamabe problem.
- February 6, 2019 Hongnian Huang (UNM)
- February 13, 2019 Hongnian Huang (UNM)
- February 20, 2019 Hongnian Huang (UNM)
- February 27, 2019 Hongnian Huang (UNM)
- March 6, 2019 Hongnian Huang (UNM)
- March 13, 2019 Mychael Smith (UNM Valencia) Equivariant E infinity algebras.
- March 20, 2019 Hongnian Huang (UNM)
- April 3, 2019 Hongnian Huang (UNM)
- April 10, 2019 Hongnian Huang (UNM)
- April 17, 2019 Dimiter Vassilev (UNM) The fractional sub-Laplacian on the Heisenberg groups.
- April 24, 2019 Hongnian Huang (UNM)
- May 1, 2019 Annunziata Loiudice (University of Bari) Efroymson Lecture: An introduction to Lorentz Spaces and applications II

## Fall 2018

- August 22, 2018 Dimiter Vassilev (UNM)
- August 29, 2018 Joseph Connelly (Air Force Research Labs) Linear Network Coding over ring alphabets.
- September 5, 2018 Hongnian Huang (UNM)
- September 12, 2018 Hongnian Huang (UNM)
- September 19, 2018 Dimiter Vassilev (UNM)
- September 26, 2018 Hongnian Huang (UNM)
- October 3, 2018 Dimiter Vassilev (UNM)
- October 10, 2018 Dimiter Vassilev (UNM)
- October 17, 2018 Hongnian Huang (UNM)
- October 24, 2018 Dimiter Vassilev (UNM)
- October 31, 2018 Dimiter Vassilev (UNM)
- November 7, 2018 Dimiter Vassilev (UNM)
- November 14, 2018 Patrick Lank (UNM)
- November 28, 2018 Jingbo Ren (University of Virginia) Mathematical logic and its applications in Number Theory.
- December 5, 2018 Patrick Lank (UNM)

## Spring 2018

- January 17, 2018 Chi Li On Metric tangent cones at KLT singularities.
- January 24, 2018 Janet Vassilev (UNM) Introduction to tight closure.
- January 31, 2018 Janet Vassilev (UNM) Tight closure continued.
- February 7, 2018 Sergey Grigorian (UT Rio Grande) G2 structures and Octonion bundles.
- February 14, 2018 Janet Vassilev (UNM) Test ideals.
- February 21, 2018 Janet Vassilev (UNM) More on test ideals.
- February 28, 2018 Janet Vassilev (UNM) Multiplier ideals and test ideals.
- March 7, 2018 Janet Vassilev (UNM) Local Cohomology and its relationship to test ideals.
- March 21, 2018 Sean Curry (UCSD) Strictly pseudoconvex domains in C^2 with obstruction flat boundary.
- March 28, 2018 Janet Vassilev (UNM) Parameter test ideals.
- April 11, 2018 Janet Vassilev (UNM) F-pure and F-injective singularities.
- April 18, 2018 Dimiter Vassilev (UNM) Conformal flatness of low-dimensional sub-Riemannian manifolds.
- May 2, 2018 Charles Boyer (UNM) Some open problems in Sasakian Geometry.

## Fall 2017

- August 30, 2017 Charles Boyer (UNM) The Kaehler geometry of Bott manifolds.
- September 6, 2017 Janet Vassilev (UNM) Introduction to tight closure.
- September 13, 2017 Janet Vassilev (UNM) Introduction to tight closure II.
- September 20, 2017 Janet Vassilev (UNM) Reduction of tight closure to characteristic 0.
- September 27, 2017 Roman Sverdlov (UNM) Causal set as a discretization of regular space-time and phase space-time.
- October 4, 2017 Roman Sverdlov (UNM) Causal set as a discretization of regular space-time and phase space-time, II.
- October 11, 2017 Roman Sverdlov (UNM) Causal set as a discretization of regular space-time and phase space-time, III.
- October 18, 2017 Roman Sverdlov (UNM) Causal set as a discretization of regular space-time and phase space-time, IV.
- October 25, 2017 Roman Sverdlov (UNM) Quantum field theory and causal sets, continuation.
- November 8, 2017 Alex Buium (UNM) Levi-Civita correspondences.
- November 15, 2017 Charles Boyer (UNM) Understanding the Sasaki cone.
- November 29, 2017 Alex Buium (UNM) Rings of correspondences.

## Spring 2017

- January 18, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, I.
- January 25, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, II.
- February 1, 2017 Alex Buium (UNM) The arithmetic Riemann curvature.
- February 8, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, III.
- February 15, 2017 Alex Buium (UNM) Arithmetic analogue of Euler’s equations for the rigid body.
- February 22, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, IV.
- March 8, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, V.
- March 15, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, VI.
- March 22, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, VII.
- April 5, 2017 Dimiter Vassilev (UNM) Quaternionic contact hypersurfaces in hyper-Kaehler manifolds.
- April 12, 2017 Dimiter Vassilev (UNM) Quaternionic contact hypersurfaces in hyper-Kaehler manifolds.
- April 19, 2017 Dimiter Vassilev (UNM) Quaternionic contact hypersurfaces in hyper-Kaehler manifolds, II.
- April 26, 2017 Hongnian Huang (UNM) Ricci flow and the Poincare conjecture, VIII.

## Fall 2016

# Analysis

## Spring 2020

## Fall 2019

- 9/27/2019 Burak Hatinoglu (Texas A&M), Mixed data in inverse spectral problems for the Schrödinger operators.
- 10/17/2019 Jacob Christiansen (Lund University, Sweden), Chebyshev polynomials (Colloquium).

## Spring 2019

- 3/25/2019 Alex Barron (Brown University), On global-in-time Strichartz estimates for the semiperiodic Schrödinger equation.
- 4/26/2019 Chamsol Park (UNM), Mixed Hessian and foling singularities and their application.
- 4/26/2019 Annunziata Louidice (University of Bari), An introduction to Lorenz spaces and applications I (Efroymson Lectures).
- 4/29/2019 Annunziata Louidice (University of Bari), An introduction to Lorenz spaces and applications II (Efroymson Lectures).
- 5/21-24/2019 NSF CAREER funded Workshop on Positivity, organized by Anna Skripka.

## Fall 2018

- 12/11/2018 Guillermo Rey (University of Minnesota), Sparse domination and the strong maximal function.
- 12/11/2018 Ji Li (Macquarie University, Australia), Boundedness and compactness of commutator of Cauchy integrals for domains in C^n with minimal smoothness.
- 12/12/2018 Jose Conde Alonso (Brown University), Non-homogeneous dyadic analysis: Calderón-Zygmund theory and the one-third trick.
- 12/12/2018 Ji Li (Macquarie University, Australia), Boundedness of certain singular integrals with non-smooth kernel on non-doubling manifold with ends.
- 12/13/2018 Jose Conde Alonso (Brown University), Sparse bounds: history and open questions (Colloquium).

## Spring 2018

- 2/26/2018 Christoph Thiele (Hausdorff Center for Mathematics, University of Bonn), Development on singular Brascamp-Lieb inequalities (Colloquium).
- 3/22/2018 Fritz Gestesy (Baylor Unviersity), Trace formulas and zeta functions for differential operators-or, a spectral theorist computes pi (Colloquium).
- 4/12/2018 Olli Tapiola (University of Missouri-Columbia), Characterizing geometry by using properties of harmonic functions (Colloquium).
- 4/13/2018 Olli Tapiola (University of Missouri-Columbia), What's so difficult about high-dimensional one-sided Muckenhoupt theory?

## Fall 2017

- 9/14/2017 Matthew Blair (UNM), L^p-norms and global harmonic analysis (Colloquium).
- 9/28/2017 Jacob Perry (University of North Carolina-Chapell Hill), Local energy estimates for wave equations with degenerate trapping (Colloquium).
- 11/10/2017 Polona Durcik (CALTECH), Twisted multilinear forms and applications.
- 11/30/2017 Jake Fillman IVirginia Tech), Spectral properties of quasicrystals (Colloquium).

## Spring 2017

- 3/2/2017 Clément Coine (Université Bourgogne Franche-Comté, France), Triple operator integral valued in trace class operators (Colloquium).
- 3/9/2017 Arup Chattopadhyay (Indian Institute of Technology Guwahati & UNM), Rank of a shift invariant subspace of the Hardy space H^2 over the bidisc (Cooloquium).
- 3/30/2017 Milivoje Lukic (Rice University), KdV equation with almost periodic initiald data (Colloquium).
- 4/6/2017 Allan Greenleaf (University of Rochester), Propagation of singularities in Calderón's inverse conductivity problem (Colloquium).
- 4/17/2017 Ricardo Saenz (Universidad de Colima, Mexico), Harmonic Analysis on Fractals (Minicourse).
- 4/18/2017 Ricardo Saenz (Universidad de Colima, Mexico), How does a fractal vibrate (Colloquium).
- 4/21/2017 Ricardo Saenz (Universidad de Colima, Mexico), Poisson integrals and maximal functions.
- 4/27/2017 Ciprian Demeter (Indiana University-Bloomington), Decoupling and applications: a journey from continuous to discrete.

## New Mexico Analysis Seminars NMAS (sponsored by NSF 2001-2009, 2014-2016)

- 5/21/2017 16th NMAS Prior to NSF/CBMS Conference on Sparse Approximation and Signal Recovery Algorithms, Main Lecturer: Anna Gilbert (University of Michigan) , held at NMSU, Las Cruces.
- 2/19-21/2016 15th NMAS Main speaker: Chris Sogge (John Hopkins), held at UNM
- 3/26-28/2015 14th NMAS Main speaker: Monika Visan (UCLA), held at NMSU, Las Cruces.
- 4/3-4/2014 13th NMAS Main speakers: Sergei Treil (Brown University), held at UNM prior to an AMS Sectional Meeting hosted by the Department.
- 4/04/2014 An afternoon in honor of Cora Sadosky Main Speakers: Svitlana Mayboroda (University of Minnesota), Gustavo Ponce (University of California, Santa Barbara), Alex Stokolos (Georgia Southern University), Rodolfo Torres (University of Kansas), Sergei Treil (Borown University), held at UNM.
- 4/23-25/2009 12th NMAS Main speaker: Loukas Grafakos (University of Missouri-Columbia), held at UNM.
- 10/11-12/2007 10th NMAS Main speakers: Rodrigo Bañuelos (Purdue University), Andrea Nahmod (University of Massachusets-Amherst), held at UNM prior to an AMS Sectional Meeting hosted by the Department.
- 10/12/2007 An afternoon in honor of Misha Cotlar Main speakers: Carlos Berenstein (University of Maryland), Carlos Kenig (Chicago University), Cora Sadosky (Howard University), Sergei Treil (Brown University), held at UNM.
- 4/6-8/2006 9th NMAS Main speaker: Tatiana Toro (University of Washington), held at UNM.
- Spring 2005 8th NMAS Main speaker: Jorge Aarao (Claremont Colleges), prior to NSF/CBMS Conference Nonlinear Dispersive Equations: Local and Global Analysis, Main Lecturer: Terence Tao (UCLA), held at NMSU, Las Cruces.
- 10/14-17/2004 7th NMAS Main speakers: Patricia Bauman (Purdue University), Luca Capogna (University of Arkansas), held at UNM prior to an AMS Sectional Meeting hosted by the Department.
- Spring 2003 6th NMAS Main speaker: Jill Pipher (Brown University), held at UNM.
- Spring 2002 5th NMAS Main speaker: John Benedetto (University of Maryland), held at NMSU, Las Cruces.
- Spring 2001 4th NMAS Main speaker: Steve Hofmann (University of Missouri-Columbia), held at UNM.
- Spring 2000 3rd NMAS Main speaker: Kate Okikiolu (University of California at San Diego), held at NMSU, Las Cruces.
- Spring 1999 2nd NMAS Main speaker: Gilles Pisier (Texas A&M and Pierre and Marie Curie University, France), held at UNM.
- Spring 1998 1st NMAS Main speaker: John Gilbert (University of Texas at Austin), held at NMSU, Las Cruces.

# Applied Math

## Spring 2020

## Fall 2019

## Spring 2019

## Fall 2018

# Colloquium

## Spring 2020

## Fall 2019

## Spring 2019

## Fall 2018

# Statistics

## Spring 2020

- 3/3/2020 Brandon, Butcher (The University of Iowa), Ph.D. candidate, A Formal MCMC Convergence Diagnostic for Bayesian Additive Regression Trees
- 2/28/2020 Hengrui Luo (The Ohio State University), Ph.D. candidate, Lower Dimensional Topological Information: Theory and Applications

## Fall 2019

- 10/25/2019 Joe Cavanaugh (University of Iowa), Professor, Models for Overdispersed Count Time Series with Excess Zeros

## Spring 2019

- 2/15/2019 J. Derek Tucker (Sandia National Lab), Ph.D., Elastic Functional Data Analysis
- 4/25/2019 Emily Casleton (LANL), Ph.D., Multi-Source Data Fusion and Imputation Methods

## Fall 2018

## Spring 2018

- 2/21/2018 Yiliang Zhu (The University of New Mexico), Professor, Mixture modeling of CD4 counts and viral load dynamic trajectories in HIV/AIDS patients
- 3/6/2018 John Lewis (Sandia National Lab), Ph.D., Bayesian Modeling of Self-Exciting Marked Point Processes with Missing Histories

## Fall 2017

## Spring 2017

- 2/18/2017 Christopher Nachtsheim (University of Minnesota), Definitive screening as a system for experimental design
- 2/20/2017 Fletcher Christensen (University of Irvine), Detection Dependence in Modeling Binary Response Data: A Bayesian Approach
**QuantBrains UNM/MRN Research Seminar Series**- A collaboration between the UNM Department of Mathematics and Statistics and The Mind Research Network organized by Prof. Erik Erhardt (Stats, UNM/MRN), Dr. Robyn Miller (Pure Math, MRN), and Dr. Flor Espinoza (Applied Math, MRN).

- 2/10/2017 Manel Martínez Ramón (UNM), A quick look into Machine Learning
- 2/24/2017 Victor Vergara (UNM), Testing for Brain Functional Organization: a Random Matrix Approach
- 3/10/2017 Rogers Silva (Mind Research Network), Advances in Blind Source Separation Modeling for Unimodal and Multimodal Brain Imaging Data Analysis
- 4/7/2017 Erik Erhardt (UNM), Visualizing scientific data
- 4/21/2017 David Bridwell (Mind Research Network), Cortical dynamics that contribute to cognition and perception, EEG
- 5/5/2017 Panel discussion, Wrap-up

## Fall 2016

**QuantBrains UNM/MRN Research Seminar Series**- A collaboration between the UNM Department of Mathematics and Statistics and The Mind Research Network organized by Prof. Erik Erhardt (Stats, UNM/MRN), Dr. Robyn Miller (Pure Math, MRN), and Dr. Flor Espinoza (Applied Math, MRN).

- 8/26/2016 Robyn Miller, Flor Espinoza, Erik Erhardt (Mind Research Network, MRN, and UNM), QuantBrains: Introduction to Human Brain Imaging
- 9/9/2016 Vince D. Calhoun (Mind Research Network and UNM), Magnetic resonance physics and fMRI
- 9/23/2016 Arvind Caprihan (Mind Research Network), Biological Basis of Diffusion Imaging
- 10/7/2016 Eswar Damaraju and Erik Erhardt (Mind Research Network and UNM), Group independent component analysis
- 10/21/2016 Robyn Miller and Erik Erhardt (Mind Research Network and UNM), Dynamic brain network connectivity
- 11/4/2016 Sergey Plis (Mind Research Network), Understanding interactions in the brain via graphical models
- 11/18/2016 Alvaro Ulloa (Mind Research Network), Specialized Deep Learning
- 12/2/2016 Flor A. Espinoza (Mind Research Network), Understanding functional connectivity differences

## Spring 2016

## Fall 2015

- 10/02/2015 Luis Enrique Nieto-Barajas (ITAM, Mexico), Order‐q dependent stochastic processes in Bayesian applications

## Spring 2015

## Fall 2014

- 9/19/14 Christine Anderson-Cook (Los Alamos National Laboratory), Some Emerging Research Areas in Response Surface Methodology
- 11/7/14 Wayne Nelson (Consultant, ASA Fellow), Graphical Analysis of Recurrent-Events Data with Applications to Engineering, Medicine, Marketing, and Other Fields

## Spring 2014

## Fall 2013

## Spring 2013

- 4/30/13 Harry Khamis (Wright State University), Multigraph Representations of Hierarchical Loglinear Models