University of Washington

The University of Washington PIMS site office is located in the Department of Mathematics at (Padleford building) the University of Washington (Map).

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University of Washington
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Alex Mason
May 8, 2024
University of Washington
We study the behavior of h-vectors associated to matroid complexes under weak maps, or inclusions of matroid polytopes. Specifically, we show that the h-vector of the order complex of the lattice of flats of a matroid is component-wise non-increasing...
Scientific, Colloquia
UWashington-PIMS Mathematics Colloquium: Gunther Uhlmann
May 17, 2024
University of Washington
We will consider the inverse problem of determining the sound speed or index of refraction of a medium by measuring the travel times of waves going through the medium. This problem arises in global seismology in an attempt to determine the inner...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Arvind Ayyer
May 1, 2024
University of Washington
The inhomogeneous multispecies PushTASEP is an interacting particle system with multiple species of particles on a finite ring where the hopping rates are site-dependent. (The homogeneous variant on Z is also known as the Hammersley–Aldous–Diaconis...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Julie Curtis
April 24, 2024
University of Washington
Tadao Oda conjectured that every smooth polytope, in any dimension, has the Integer Decomposition Property. Beck et al. previously showed that smooth polytopes which are both 3-dimensional and centrally symmetric have this property. We show this...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Michael Tang
April 17, 2024
University of Washington
In characteristic zero, the Hopf algebra of quasisymmetric functions QSym is isomorphic to the shuffle algebra of compositions Sh, and isomorphisms between them can be specified via shuffle bases of QSym. We give characterizations of shuffle bases...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Brendon Rhoades
April 3, 2024
University of Washington
The Schensted correspondence is a bijection between permutations in Sn and pairs of standard Young tableaux (P,Q) with n boxes which have the same shape. This bijection has remarkable properties in algebraic and enumerative combinatorics. Motivated...
Scientific, Colloquia
UWashington-PIMS Mathematics Colloquium: YanYan Li
May 10, 2024
University of Washington
A harmonic function of one variable is a linear function. A harmonic function of two variables is the real or imaginary part of an analytic function. A harmonic function of n variables is a function u satisfying \frac{\partial^{2}u}{\partial x_{1}^{2...
Scientific, Colloquia
UWashington-PIMS Mathematics Colloquium: Anna Gilbert
April 5, 2024
University of Washington
Building trees to represent or to fit distances is a critical component of phylogenetic analysis, metric embeddings, approximation algorithms, geometric graph neural nets, and the analysis of hierarchical data. We summarize several recent efforts to...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Galen Dorpalen-Barry
April 10, 2024
University of Washington
Motivated by a conjecture of Maglione–Voll from group theory, we introduce and study the Poincaré-extended ab-index. This polynomial generalizes both the ab-index and the Poincaré polynomial. For posets admitting R-labelings (a relaxation of EL...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Matjaž Konvalinka
March 6, 2024
University of Washington
Alternating sign matrices (ASMs) were introduced by Robbins and Rumsey in the early 1980s. Together with Mills they conjectured an enumerative formula for the number of ASMs of size n×n, which was proved independently by Zeilberger and Kuperberg...

Staff

Position Name Email Phone # Office
PIMS Site Director, University of Washington Jayadev Athreya jathreya@uw.edu +1 (206) 616-2481 C-419, Padelford Hall
Site Administrator - University of Washington Michael Munz munz@math.washington.edu +1 (206) 543-0397
Name Position Research Interests Supervisor Year
Pawel Morzywolek PIMS-Simons Postdoctoral Fellow, University of Washington Statistics Alex Luedtke 2024
Anastassiya Semenova PIMS-Simons Postdoctoral Fellow, University of Washington Applied mathematics and nonlinear science Bernard Deconinck 2023
Daniel Kessler PIMS-Simons Postdoctoral Fellow, University of Washington Statistics Daniela Witten 2023
Samuel Van Fleet PIMS-Simons Postdoctoral Fellow, University of Washington Numerical Analysis and PDE Jingwei Hu 2023
Amrei Oswald Postdoctoral Researcher Non-commutative Algebra James Zhang 2022
Shiping Cao Postdoctoral Researcher Fractals Zhen-Qing Chen 2022
Xiaowen Zhu PIMS Postdoctoral Fellow, University of Washington Mathematical Physics Alexis Drout 2022
Jesse Daniel Raffa University of Washington Statistics Elizabeth A. Thompson 2014
Nicholas W. Reichert University of Washington Partial Differential Equations Robin Graham 2014