# University of Washington

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Scientific, Seminar

UW Combinatorics and Geometry Seminar: Scott Neville

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, Colloquia

UWashington-PIMS Mathematics Colloquium: Thomas Rothvoss

TBA

Scientific, Seminar

UW Combinatorics and Geometry Seminar: Joseph Fluegemann

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

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

The PIMS Postdoctoral Fellow Seminar: Anastassiya Semenova

TBA

Scientific, Seminar

The PIMS Postdoctoral Fellow Seminar: Konstantinos Mamis

TBA

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Scientific, Seminar

UW Combinatorics and Geometry Seminar: Daoji Huang

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

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

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

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

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

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

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

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

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

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...

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## Staff

Position | Name | 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 |