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: Scott Neville
October 16, 2024
University of Washington
Quivers and their mutations play a fundamental role in the theory of cluster algebras. We focus on the problem of deciding whether two given quivers are mutation equivalent to each other. Our approach is based on introducing an additional structure...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Joseph Fluegemann
October 23, 2024
University of Washington
We consider the Grassmannian G r C ( k , n ) , a manifold parameterized by k -dimensional planes in complex n -dimensional space. The Schubert decomposition of the Grassmannian is perhaps the classic way to split this space into smaller pieces...
Scientific, Colloquia
UWashington-PIMS Mathematics Colloquium: Persi Diaconis
November 1, 2024
University of Washington
The computer is taking over. AND, in many branches of applied mathematics and statistics we hear 'why bother to prove theorems? simulations and numerical approximation are easier and better for real problems'. NOT SO FAST; I will present a collection...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Daoji Huang
October 9, 2024
University of Washington
Influential work of Hodge from the 1940s led the way in using Gröbner bases to combinatorially study the Grassmannian. In this talk, we will follow Hodge's approach in order to investigate certain subvarieties called positroid varieties. Positroid...
Scientific, Seminar
Kantorovich Initiative Seminar: Laetitia Chapel
May 23, 2024
University of Washington
Optimal transport operates on empirical distributions which may contain acquisition artifacts, such as outliers or noise, thereby hindering a robust calculation of the OT map. Additionally, it necessitates equal mass between the two distributions...
Scientific, Seminar
Optimization and Data Seminar: Amitabh Basu
June 3, 2024
University of Washington
We consider the problem of minimizing a convex function under convex constraints, where some or all of the decision variables are constrained to be integer, with access to first-order oracles for the objective function and separation oracles for the...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Fiona Young
May 29, 2024
University of Washington
One way to define an integer polymatroid ρ is via its independent set polytope, whose faces are parallel translations of the independent set polytopes of the minors of ρ. To better understand the interior of this polytope, we endow a structure on...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Kevin Liu
May 22, 2024
University of Washington
In this talk, we consider colored permutation groups ℤm≀Sn, which contain the symmetric groups Sn≅ℤ1≀Sn and the signed symmetric groups Bn≅ℤ2≀Sn as special cases. Like in Sn, colored permutations in ℤm≀Sn have a notion of cycle type that classifies...
Scientific, Seminar
UW Combinatorics and Geometry Seminar: Hailun Zheng
May 15, 2024
University of Washington
A d-polytope is called (d−i)-simplicial if all of its (d−i)-faces are simplices. It is i-simple if every (d−i−1)-face belongs to exactly i+1 facets. A few low-dimensional examples of (d−i)-simplicial i-simple polytopes arising from regular polytopes...
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...

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