# University of Washington

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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...

Scientific, Seminar

UW Combinatorics and Geometry Seminar: Michael Tang

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...

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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 |