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Welcome to the bare bones website for the online version of the Algebraic Combinatorics workshop originally intended to be held at Institut Mittag Leffler. The talks took place via Zoom and were spread out April 20 - April 30.
Feel free to contact us at acow.042020@gmail.com if you have any questions.
"Let moo be a partition..."
Schedule
Schedule
The schedule for each week is in the links below. Note that we start at 17:00 Stockholm time on each day (11:00 EDT and 08:00 PDT).
Week 1 (April 20 - 24) Schedule and abstract
Day 1:
Richard Stanley: From Stern's triangle to upper homogeneous posets (Slides)(Video)(Chat history)
Guillaume Chapuy: Jack polynomials, non-orientable branched covers, and the b-conjecture (Slides)(Video)(Chat history)
Day 2:
Lauren K. Williams: The positive tropical Grassmannian, the hypersimplex, and the amplituhedron (Slides)(Video)(Chat history)
Ron Adin: Cyclic permutations, shuffles, and quasi-symmetric functions (Slides)(Video)(Chat history)
Day 3:
Per Alexandersson: A combinatorial e-expansion of vertical-strip LLT polynomials (Slides)(Video)(Chat history)
Axel Hultman: Shortest paths, inversion arrangements, and the weak order (Slides)(Video)(Chat history)
Thomas Lam: Positive configuration space (Slides)(Video)(Chat history)
Day 4:
Yuval Roichman: Cyclic descent extensions and higher Lie characters (Slides)(Video)(Chat history)
Mark Wilson: Higher Dimensional Lattice Walks: Connecting Combinatorial and Analytic Behavior (Slides)(Video)(Chat history)
Day 5:
Volkmar Welker: Partial orders on compositions and real polynomials with restricted root multiplicities (Slides)(Video)(Chat history)
Matthieu Josuat-Vergès: A refined enumeration of some factorizations of a Coxeter element (Slides)(Video)(Chat history)
Week 2 (April 27 - 30) Schedule and abstract
Day 1:
Anders Claesson: Pop-stack sorting (Slides)(Video)(Chat history)
Sami Assaf: A Pieri rule for key polynomials (Slides)(Video)(Chat history)
Day 2:
John Shareshian: Which Schubert varieties are Hessenberg varieties? (Slides)(Video)(Chat history)
Alex Yong: The A.B.C.Ds of Schubert calculus (Slides)(Video)(Chat history)
Day 3:
Soichi Okada: Symplectic Q-functions (Slides)(Video)(Chat history)
Sarah Mason: Lifting the dual immaculate functions (Slides)(Video)(Chat history)
Day 4:
Brendon Rhoades: Lefschetz theory for exterior algebras and fermionic diagonal coinvariants (Slides)(Video)(Chat history)
Philippe Nadeau: The cohomology class of the Peterson variety (Slides)(Video)(Chat history)
Vic Reiner: Whitney numbers for poset cones (Slides)(Video)(Chat history)
Day 5:
Knytkalas Potluck Smorgasboard
Thank you so much for everyone participating in the workshop!
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