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)
.
On the Paley graph of a quadratic character
Người báo cáo: Nguyễn Duy Tân
Time: 9:30 - 11:00, Jan 11, 2023.
Venue: Room 612, A6, Institute of Mathematics, VAST
Abstract: Classically, for each prime number p, we can construct the corresponding Paley graph using quadratic and non-quadratic residues modulo p. In this talk, we discuss generalized Paley graphs. These are graphs that are associated with a general quadratic character. We will provide some of their basic properties. In particular, we describe their spectrum explicitly and use them to construct some new families of Ramanujan graphs. We will also provide an effective upper bound for the Cheeger number of these generalized Paley graphs.