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News
- Matthew Kahle awarded an NSF CAREER grant (April 1, 2014)
Upcoming Events
- The inhomogeneous multispecies PushTASEP and Macdonald polynomials (Arvind Ayyer, Indian Institute of Science) - May 1 - 3:30pm to 5:00pm - PDL C-401 and via Zoom Link: https://washington.zoom.us/j/91547335974
- TBA (Daoji Huang, University of Minnesota) - May 8 - 3:30pm to 5:00pm - PDL C-401 and via Zoom Link: https://washington.zoom.us/j/91547335974
- TBA (Hailun Zheng, University of Houston-Downtown) - May 15 - 3:30pm to 5:00pm - PDL C-401 and via Zoom Link: https://washington.zoom.us/j/91547335974
- TBA (Kevin Liu, University of Washington) - May 22 - 3:30pm to 5:00pm - PDL C-401 and via Zoom Link: https://washington.zoom.us/j/91547335974
- TBA (Fiona Young, Cornell University) - May 29 - 3:30pm to 5:00pm - PDL C-401 and via Zoom Link: https://washington.zoom.us/j/91547335974
Past Events
- Smooth Combinatorial Cubes are IDP (Julie Curtis, University of Washington) - April 24, 2024
- Shuffle bases and quasisymmetric power sums (Michael Tang, University of Washington) - April 17, 2024
- The Poincare-Extended ab-Index (Galen Dorpalen-Barry, University of Oregon) - April 10, 2024
- Increasing subsequences, orbit harmonics, and shadow play (Brendon Rhoades, University of California, San Diego) - April 3, 2024
- The first bijective proof of the ASM theorem (Matjaž Konvalinka, University of Ljubljana) - March 6, 2024
- Incidences and Tilings (Sergey Fomin, University of Michigan) - February 28, 2024
- Solving puzzles of shellable simplicial spheres (Yirong Yang, University of Washington) - February 21, 2024
- Moshe's Insanity (Moshe Rosenfeld, University of Washington, Tacoma) - February 14, 2024
- CANCELED: The Poincare-Extended ab-Index (Galen Dorpalen-Barry, University of Oregon) - February 7, 2024
- Tropicalization of the principal minors of positive semidefinite matrices (Cynthia Vinzant, University of Washington) - January 31, 2024
- Farahat-Higman Algebras for Classical Linear Groups (Arun Kannan, Massachusetts Institute of Technology) - January 24, 2024
- Distributional properties of colored multiset Eulerian polynomials (Danai Deligeorgaki, KTH Royal Institute of Technology) - January 17, 2024
- A regular unimodular triangulation of the matroid base polytope (Gaku Liu, University of Washington) - January 10, 2024
- Numerical semigroups, minimal presentations, and posets (Christopher O'Neill, San Diego State University) - December 6, 2023
- A noncommutative Schur function approach to chromatic symmetric functions (Isaiah Siegl, University of Washington) - November 29, 2023
- Extremal crystals and atom-positivity (Samuel Armon, University of Southern California) - November 8, 2023
- Matroid Schubert varieties and equivariant compactifications (Colin Crowley, University of Oregon) - November 1, 2023
- Quantum Bruhat graphs and tilted Richardson varieties (Shiliang Gao, University of Illinois at Urbana-Champaign) - October 25, 2023
- Snake Graphs for Graph LP Algebras (Sunita Chepuri, University of Puget Sound) - October 18, 2023
- Projections of Richardson Varieties (Travis Grigsby, Oklahoma State University) - October 11, 2023
- Face Numbers and Angles of Polytopes (Josh Hinman, University of Washington) - October 4, 2023
- Combinatorics of two-boundary Temperley-Lieb algebras (Zajj Daugherty, Reed College) - May 31, 2023
- Combinatorics of CAT(0) cubical complexes, crossing complexes and co-skeletons (Rowan Rowlands, University of Washington) - May 24, 2023
- Central transversals and hyperplane arrangements (Pablo Soberón, City University of New York, Baruch College) - May 17, 2023
- Tautological classes of matroids (Christopher Eur, Harvard University) - May 10, 2023
- Mixed Volumes of Normal Complexes (Lauren Nowak, University of Washington) - May 3, 2023
- Chip-firing game on metric graphs and combinatorics of their Jacobians (Farbod Shokrieh, University of Washington) - April 26, 2023
- SL_4 web bases from hourglass plabic graphs (Joshua Swanson, University of Southern California) - April 19, 2023
- The Polyhedral Combinatorics of Pivot Rules (Alex Black, University of California Davis) - April 12, 2023
- Higher Weak Order of Affine Permutations (Herman Chau, University of Washington) - March 8, 2023
- Algebra, Geometry & Combinatorics of the Pinhole Camera (Rekha Thomas, University of Washington) - March 1, 2023
- The geometric method, matroids and related simplicial complexes (Andrew Berget, Western Washington University) - February 22, 2023
- Vertex labeling properties on graphs and complexes (Bruno Benedetti, University of Miami) - February 15, 2023
- Combinatorial mutations and birational maps (Ricky Liu, University of Washington) - February 1, 2023
- Unimodular triangulations of sufficiently large dilations (Gaku Liu, University of Washington) - January 25, 2023
- Transfer systems and model structures for combinatorialists (Kyle Ormsby, University of Washington) - January 18, 2023
- Problems around Combinatorial Graphs and Distance Geometry (Stefan Steinerberger, University of Washington) - January 11, 2023
- Subdivisions of Shellable Complexes (Max Hlavacek, University of California Berkeley) - December 7, 2022
- Odd diagrams and patterns (Bridget Tenner, DePaul University) - November 30, 2022
- 3D plabic graphs and cluster structures on type A braid varieties (Melissa Sherman-Bennett, Massachusetts Institute of Technology) - November 16, 2022
- 2-LC triangulated manifolds are exponentially many (Marta Pavelka, University of Miami) - November 9, 2022
- On the anisotropy theorem of Papadakis and Petrotou (Elizabeth Xiao, University of British Columbia) - November 2, 2022
- Enumerating interval graphs and d-representable complexes (Amzi Jeffs, Carnegie Mellon University) - October 26, 2022
- Hurwitz numbers via topological recursion (Reinier Kramer, University of Alberta) - October 19, 2022
- A Pattern Avoidance Criteria for Smoothness of Positroid Varieties Via Decorated Permutations, Spirographs, and Johnson Graphs (Jordan Weaver, University of Washington) - October 12, 2022
- Maximal Chain Descent Orders (Stephen Lacina, University of Oregon) - October 5, 2022
- Stable homotopy groups of motivic spheres and the Suslin-Hurewicz homomorphism (Oliver Röndigs, Osnabrück University) - October 4, 2022
- Flavors of the Fubini-Bruhat Order (Stark Ryan, University of Washington) - June 1, 2022
- Higher Categorical Associahedra (Spencer Backman, University of Vermont) - May 25, 2022
- Pattern-avoiding parking functions (Lara Pudwell, Valparaiso University) - May 18, 2022
- Graph limits and graph homomorphism inequalities (Fan Wei, Princeton University) - May 11, 2022
- A Proof of Grünbaum’s Lower Bound Conjecture for polytopes, lattices, and strongly regular pseudomanifolds (Lei Xue, University of Washington) - May 4, 2022
- q-Whittaker functions, finite fields, and Jordan forms (Steven Karp, LaCIM, Université du Québec à Montréal) - April 27, 2022
- Grothendieck-to-Lascoux Expansions (Tianyi Yu, University of California San Diego) - April 13, 2022
- Linear relations among Schubert structure coefficients (Anna Weigandt, Massachusetts Institute of Technology) - April 6, 2022
- Planar Tanglegram Layouts and Edge Insertion (Kevin Liu, University of Washington) - February 16, 2022
- Common tangents to polytopes and convex bodies (José Alejandro Samper, Pontificia Universidad Católica de Chile) - February 9, 2022
- Non-realizability of polytopes via linear programming (Amy Wiebe, Simon Fraser University) - February 2, 2022
- Braiding and twisting open positroid varieties (Christopher Fraser, Michigan State University) - January 19, 2022
- From symmetric functions, to knots, and back again (Nicolle González, University of California Los Angeles) - December 8, 2021
- CANCELED: Braiding and twisting open positroid varieties (Christopher Fraser, Michigan State University) - December 1, 2021
- Multiplicities of maximal dominant weights of some affine Lie algebra modules (Kailash Misra, North Carolina State University) - November 29, 2021
- When is the probability of avoiding a graph super-exponentially small? (Rajko Nenadov, Google Zürich) - November 17, 2021
- Helly type problems: topology, the cascade conjecture, and graph coloring (Gil Kalai, Hebrew University of Jerusalem, Reichman University, and NYU) - November 10, 2021
- Combinatorial atlas for log-concave inequalities (Swee Hong Chan, University of California Los Angeles) - November 3, 2021
- Bumpless pipe dreams encode Gröbner geometry of Schubert polynomials (Patricia Klein, University of Minnesota) - October 27, 2021
- f*- and h*-vectors (Matthias Beck, San Francisco State University) - October 20, 2021
- P-partition generating functions of naturally labeled posets (Ricky Liu, University of Washington) - October 13, 2021
- Lorentzian polynomials on cones and the Heron-Rota-Welsh conjecture (Jonathan Leake, Technische Universität Berlin, Germany) - October 6, 2021
- On discrete gradient vector fields and Laplacians of simplicial complexes (Andrew Tawfeek, Amherst College) - June 2, 2021
- Morphisms, Minors, and Minimal Obstructions to Convexity of Neural Codes (Amzi Jeffs, University of Washington) - May 26, 2021
- Many neighborly spheres (Isabella Novik, University of Washington) - May 19, 2021
- On Schubert polynomials (Karola Mészáros, Cornell University) - May 12, 2021
- Complex analysis meets combinatorics (Steffen Rohde, University of Washington) - May 5, 2021
- An Efficient Algorithm for Deciding the Vanishing of Schubert Polynomial Coefficients (Colleen Robichaux, UIUC) - April 28, 2021
- The equivariant Ehrhart theory of the permutahedron ( Mariel Supina, UC Berkeley) - April 21, 2021
- An odd tale of permutation statistics (Angela Carnevale, National University of Ireland, Galway) - April 14, 2021
- Type cones and products of simplices (Bennet Goeckner, University of Washington) - April 7, 2021
- A structural Szemerédi–Trotter theorem for cartesian products (Adam Sheffer, CUNY) - March 10, 2021
- Cubes, Codes, and Graphical Designs (Catherine Babecki, University of Washington) - March 3, 2021
- Singular Hodge theory for combinatorial geometries ( Jacob Matherne, University of Oregon) - February 24, 2021
- A Proof of Grünbaum's Lower Bound Conjecture for general polytopes, and strongly regular CW spheres (Lei Xue, University of Washington) - February 17, 2021
- Decompositions of Ehrhart h*-Polynomials for Rational Polytopes (Andrés R. Vindas Meléndez, University of Kentucky ) - February 10, 2021
- A categorification of the Malvenuto-Reutenauer algebra via a tower of groups (Farid Aliniaeifard, The University of British Columbia) - February 3, 2021
- A Higher-Dimensional Sandpile Map (Alex McDonough, Brown University) - January 27, 2021
- Empty axis-parallel boxes ( Boris Bukh, Carnegie Mellon University) - January 20, 2021
- How to divide multiple cakes fairly using topology ( Shira Zerbib, Iowa State University) - January 13, 2021
- Symmetry Adapted Gram Spectrahedra ( Isabelle Shankar, UC Berkeley) - December 9, 2020
- The 1/3–2/3 Conjecture for Coxeter groups (Yibo Gao, Massachusetts Institute of Technology) - December 2, 2020
- Cubical Pachner moves and bordisms of immersions (Gaku Liu, University of Washington) - November 18, 2020
- Order Polynomial Product Formulas and Poset Dynamics (Sam Hopkins, University of Minnesota) - November 4, 2020
- The space of monotone paths of a linear program (Jesús A. De Loera, University of California, Davis) - October 28, 2020
- Polymatroids and finite groups (Ed Swartz, Cornell University) - October 21, 2020
- Cohomology rings of regular nilpotent Hessenberg varieties and hyperplane arrangements (Satoshi Murai, Waseda University) - October 14, 2020
- The topological Tverberg problem beyond prime powers (Florian Frick, Carnegie Mellon University) - October 7, 2020
- Algebraic signatures of convexity in combinatorial neural codes (Nora Youngs, Colby College) - October 9, 2019
- Configuration Spaces on Trees with Loops (Safia Chettih) - May 24, 2018
- A Homological Theory of Functions (Greg Yang, Microsoft Research) - February 22, 2018