Xuất bản mới
Trần Hùng Cường, Yongdo Lim, Nguyễn Đông Yên, On a solution method in indefinite quadratic programming under linear constraints, Optimization, Volume 73, 2024 - Issue 4, Pages 1087-1112 (SCI-E, Scopus) .
Yongdo Lim, Hoàng Ngọc Tuấn, Nguyễn Đông Yên, Local Error Bounds for Affine Variational Inequalities on Hilbert Spaces,, Numerical Functional Analysis and Optimization, Volume 45, 2024, Issue 1, Pages 1-15 (SCI-E, Scopus) .
Đỗ Thái Dương, Nguyễn Văn Thiện, On the finite energy classes of quaternionic plurisubharmonic functions, Journal of Mathematical Analysis and Applications, Volume 541, Issue 1, January 2025, 128736 (SCI-E, Scopus) .

Vector bundles on punctured spectrum of local rings

Người báo cáo: Đào Hải Long (University of Kansas, USA)


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.