Speaker: Yongqi Liang (University of Science and Technology of China)

Time: Friday, 26.Apr.2019, 8:30--9:30

Place: Room 402, Mathematical Building 

Abstract: We consider algebraic varieties defined over a number field. We will define strong and weak approximation properties (with or without Brauer-Manin obstruction) for rational points on varieties. We will talk about some results on the non-invariance of such properties under the extension of the ground field.