Dear all,

This is a gentle reminder of the CART seminar by Serena An (Massachusetts Institute of Technology) and Katherine Tung (Harvard University) on 10:30 - 11:30 am tomorrow (in Korea time).

Hope to see you at the seminar!

Best regards, Jaeseong Oh -----------------------원본 메세지----------------------- 보낸사람: "오재성"jsoh@kias.re.kr 받는사람: "All Members(all)" all@kias.re.kr 참조: cart-seminar@snurep.crystalline.site, anser@mit.edu, katherinetung@college.harvard.edu 보낸날짜: 2025-03-27 21:53:47 GMT +0900 (Asia/Seoul)제목: CART Seminar announcement (Serena An and Katherine Tung, Apr 3 (Thu), 10:30AM)

Dear all,

The upcoming CART seminar is scheduled for April 3rd (Thursday), 10:30 - 11:30 (Korea time).

Speaker: Serena An (Massachusetts Institute of Technology, USA) and Katherine Tung (Harvard University, USA) Title: Postnikov–Stanley polynomials are Lorentzian Abstract: The M-convexity of dual Schubert polynomials was first proven by Huh, Matherne, Mészáros, and St. Dizier in 2022. We give an alternative, elementary proof of this result, explicitly characterize the Newton polytopes of dual Schubert polynomials, and provide a polynomial-time algorithm for determining if a dual Schubert polynomial coefficient vanishes. We furthermore generalize the M-convexity result by showing that Postnikov–Stanley polynomials, also called skew dual Schubert polynomials, are Lorentzian. This work is joint with Yuchong Zhang and is contained in papers arXiv:2411.16654 and arXiv:2412.02051.

You can join the seminar via the following

Zoom link: https://us06web.zoom.us/j/86248755466?pwd=J0AVcWEKab1siO8KQ4yeXQgFkKJyqo.1 Meeting ID: 862 4875 5466 Password: 673602

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, Jaeseong Oh