Tin tức nổi bật
Hội thảo sắp diễn ra
27/09/25, Hội nghị, hội thảo:
Gặp gỡ Toán học 2025 - Hội thảo Khoa học các nhà nghiên cứu trẻ"
06/11/25, Hội nghị, hội thảo:
Lectures on selected areas in Pure Mathematics
24/11/25, Hội nghị, hội thảo:
Hội nghị toàn quốc lần thứ VII “Xác suất - Thống kê: Nghiên cứu, ứng dụng và giảng dạy”
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)
.
Lifting of Abelian Covers from Characteristic $p$ to Characteristic $0$
Người báo cáo: Đặng Quốc Huy (NCTS)
Thời gian: 16h30 thứ Năm ngày 12/06/2025
Địa điểm: Room 612, A6, Institute of Mathematics-VAST
Online (Join Zoom Meeting) tại link: https://zoom.us/j/99636681387?pwd=0WscBnehOJig68SqctGluVuA3RwraE.1
Tóm tắt: In characteristic $0$, it is known that cyclic extensions of fields are determined by Kummer theory. In characteristic $p$, in addition to Kummer theory, we need Artin–Schreier–Witt theory to classify these extensions. Matsuda constructed a formal morphism that connects these two theories, providing a bridge between characteristic $p$ and characteristic $0$. In this talk, we discuss an algebraization process of Matsuda’s theory to study the lifting of abelian isogenies from characteristic $p$ to characteristic $0$ and show that every lift of an abelian étale cover of a local scheme is a pull-back of such a lift of an abelian isogeny.