HOẠT ĐỘNG TRONG TUẦN

Thời gian: 9h00, Thứ 4, Ngày 18/4/2018
Địa điểm: Phòng 611-612 Tầng 6 nhà A6, Viện Toán học
Tóm tắt: In this talk, we introduce very basic projective invariants of projective closed subscheme which are regarded as measures of the complexities of them. For examples, the reduction number, multiplicities, Castelnuovo-Mumford regularities of the homogeneous coordinate rings, the section rings, and graded Betti numbers of syzygies. I will give some upper bounds and lower bounds of those invariants and extremal cases can also be provided.