Dear all,

We resume our CART seminar, whose first talk is scheduled for Sep. 11 (Fri), 10:00-11:00 in Korea time (9:00-10:00 in Beijing).

Speaker: Rui Xiong (University of Michigan, USA) Title: A Proof of Butler's Positivity Conjecture Abstract: In this talk, I will present our recent proof of Butler's Schur positivity conjecture for Macdonald intersection polynomials (arXiv: 2608.11543). The proof uses the geometry of the Hilbert scheme of points in the affine plane. This is joint work with Peter Guo and Mingyang Kang.

You can join the seminar via the following Zoom link: https://kias-re-kr.zoom.us/j/83006661943?pwd=0ZeKWRUD2KnGdjROgueVh2hqzXZjAk.... Meeting ID: 830 0666 1943 Password: 603397

Please feel free to forward this to anyone who might be interested. You can check out further information on CART seminar on our website (https://sites.google.com/view/cart-kias/).

Looking forward to seeing you at the seminar!

Best regards,

Sin-Myung Lee