Colloquium
DATE	2020-05-28　15:10-16:00
PLACE	數學館3174教室
SPEAKER	江孟蓉副教授（成功大學數學系）
TITLE	Cyclic Actions on Symplectic 4-Manifolds
ABSTRACT	We study homologically trivial finite cyclic actions on symplectic four-manifolds and discuss whether they extend to circle actions. In particular, we give examples of cyclic actions that do not extend to circle actions, while the manifolds themselves admit circle actions. This is a joint work with Liat Kessler.