演講公告

新聞標題：　( 2025-02-04 )

• 演講主題：On a cohomological description of algebraic cycles modulo numerical equivalence

• 主講人：Dr. Ryota Mikami (中央研究院)

• 演講日期：2025年2月18日(二) 14:00 –15:00

• 演講地點：(光復校區) 科學一館213室

• 摘要內容：
  

  Abstract
  The group of algebraic cycles, i.e, formal sums of algebraic subvarieties of a fixed algebraic variety, is a fundamental invariant in algebraic geometry. Since the group is too large, we usually consider its quotients by adequate equivalence relations. Numerical equivalence is one of such equivalence relations given abstractly. In this talk, I will explain a description of the quotient by numerical equivalence (with rational coefficients) as cohomology of some geometric object under suitable assumption.

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