Xuất bản mới
Nguyễn Hữu Sáu, Piyapong Niamsup, Vũ Ngọc Phát, Linear Programming Approach to Constrained Stabilization of Positive Differential-Difference Equations With Unbounded Delay, Optimal Control Applications and Methods, 2025; 46:2581--2594 (SCI-E, Scopus) .
Đỗ Hoàng Sơn, Vũ Đức Việt, Quantitative stability for the complex Monge-Ampère equations II, Calculus of Variations and Partial Differential Equations 64 (2025), no. 8, Paper No. 269 (SCI-E, Scopus) .
Giang Trung Hiếu, Existence and uniqueness results for a nonlinear Budiansky-Sanders shell model, Journal of Engineering Mathematics, Volume 151, article number 5, (2025) (SCI-E, Scopus) .

Vector bundles on punctured spectrum of local rings

Người báo cáo:


Thời gian: 17h15-18h30, thứ năm, 06/07/2023

Hình thức: Offline tại phòng 612 A6 và online qua google meet, cụ thể https://meet.google.com/yep-kbzk-eao?pli=1&authuser=1

Tóm tắt: Let $(R,m)$ be a local Noetherian rings. In this talk, I will discuss the category of reflexive modules that are locally free of constant rank on the punctured spectrum of $R$. Even in dimension one, this category is poorly understood until quite recently (and will be discussed in my talk at the Algebra seminar on Wednesday). When the depth of $R$ is at most $2$, such category is equivalent to the category of vector bundles on the punctured spectrum of $R$. This point of view has connected many simple statements in commutative algebra to modern topics: Picard groups, Brauer groups, Nori fundamental group schemes, etc. I will sketch these and other connections to algebraic geometry and singularity theory.