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 Title: Characteristic cycle of an l-adic sheaf Speaker: Takeshi Saito (齋藤毅 東京大學) 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. Attachment: