Thời gian: 9h thứ 3, ngày 15/3/2018
Địa điểm: Phòng 4, Nhà A14, Viện Toán học

Tóm tắt: Arrangements of hypersurfaces are geometric objects that locally look like arrangements of hyperplanes, and generalize normal crossing divisors. Their study is a global version of the classical study of arrangements of hyperplanes, due to Arnold, Brieskorn, and Orlik—Solomon, and mixes geometry, topology, and combinatorics. In this talk we will introduce tools to compute the cohomology of complements of arrangements of hypersurfaces and prove formality results.