Spring 2026
Time & Location: All talks are on Wednesday in _____, at 3:00 PM unless otherwise noted.
Organizers: Kalina Mincheva and Alessandra Costantini
Information on up coming events can be found at unofficial seminar website: Here
January 14, 2026
Algebra and Combinatorics
Title: Frobenius singularities of permanental varieties
Speaker: Trung Chau - Chennai Mathematical Institute (Host): Tai Ha
Abstract: A permanent of a square matrix is exactly its determinant with all minus signs becoming plus. Despite the similarities, the computation of a determinant can be done in polynomial time, while that of a permanent is an NP-hard problem. In 2002, Laubenbacher and Swanson defined P_t(X) to be the ideal generated by all t-by-t subpermanents of X, and called it a permanental ideal. This is a counterpart of determinantal ideals, the center of many areas in Algebra and Geometry. We will discuss properties of P_2(X), including their Frobenius singularities over a field of prime characteristic, and related open questions.
