Title: Characteristic cycle of an l-adic sheaf
Speaker: Takeshi Saito (斋藤毅 东京大学)
Time: 2019-9-4, 9:45—10:45
Place: N202
Abstract: For an l-adic sheaf on a smooth variety over a perfect field of characteristic p >= 0, its characteristic cycle is defined as a cycle supported on the singular support, defined by Beilinson as a conical closed subset of the cotangent bundle of the variety. This is an algebraic analogue of that constructed by Kashiwara-Schapira in a transcendental setting.