中科院数学与系统科学研究院

数学研究所

中科院华罗庚数学重点实验室

综合报告会

（Colloquium）

报告人： 田志宇 (北京大学)

题  目：Integral Hodge conjecture and beyonds

时  间：2019.11.15(星期五) , 16:30-17:30(16:00-16:30为茶点时间, 地点: 数学院南楼N920室)

地  点：数学院南楼N202室

摘  要：Hodge conjecture predicts when a rational cohomology class is the fundamental class of an algebraic cycle. In recent years, there has been lots of interest in understanding which integral cohomology class comes from the fundamental class of an algebraic cycle. I will talk about examples, counterexamples, and some ideas lying behind these.