Fall 2020

(q,t)- Catalan Numbers and the Shuffle Theorem

When: Thursday at 11am-12pm (Pacific Time) + 30 min for exercises and discussion.

Where: Online! Email me or Foster Tom for zoom info.

Topic: Combinatorics of the Shuffle conjecture, q-t Catalan numbers, and the space of diagonal harmonics.

Reading:

  1. The q,t-Catalan Numbers and the Space of Diagonal Harmonics, by Jim Haglund available online HERE.

  2. A proof of the shuffle conjecture by Erik Carlsson and Anton Mellit available here HERE with supplementary notes by Jim Haglund and Guoce Xin available HERE.

Schedule

During September and October we will be following The q,t-Catalan Numbers and the Space of Diagonal Harmonics, by Jim Haglund available online HERE. Additional resources can be found in Haiman's expository papers HERE and HERE.

During November we will be going over the proof of Shuffle conjecture by Carlsson and Mellit from their article HERE.

Below is an approximate schedule of the sections we plan to cover. I will try to keep the sections actually covered up to date.

Date Sections Speaker Notes

Sep 3 2.1, 2.2 Nicolle Gonzalez (UCLA) HERE

Sep 10 2.3, 2.4 Nicolle Gonzalez HERE

Sep 17 2.5 Nicolle Gonzalez HERE

Sep 24 3.1, 3.2 Foster Tom (UC Berkeley) HERE

Oct 1 3.2, 3.4 Foster Tom HERE

Oct 8 4.4, 5.1 Aram Dermenjian (York U.) HERE

Oct 15 5.1, 5.2 Aram Dermenjian (York U.) HERE

Oct 22 6.1, 6.2 Jianping Pan (UC Davis) HERE

Oct 29 6.3, 6.4 Pranav Trivedi (UC Berkeley) HERE

Nov 5 Shuffle Proof Nicolle Gonzalez HERE + Video

Nov 12 Shuffle Proof Nicolle Gonzalez HERE + Video

Nov 19 Shuffle Proof Nicolle Gonzalez HERE + Video

Nov 26 Thanksgiving ----------------

Dec 3 Shuffle Proof Nicolle Gonzalez HERE + Video

Dec 10 LLT Polynomials Foster Tom

Dec 17 LLT Polynomials Foster Tom