Geometry, Algebra and Topology Seminar
	Speaker: Dr.Yi Yao   Sichuan University
	Title: Infimum of Calabi
functionals and worst test-configurations on toric manifolds
	Abstract:Donaldson
has given a lower bound of Calabi functional by the infimum of Futaki
invariant, and conjectures that they are should be equal. On toric manifolds,
Szekelyhidi has proved this conjecture through Calabi’s flow. And in the
un-stable case, the worst test-configuration gives a canonical semi-stable
decomposition of the polytope. In this talk I will introduce this work and the
related background of Kahler geometry and toric manifolds will also be
given. 
	Time: 3:30pm--5:30pm, Tuesday,
Dec 22, 2015
	Place:  X2415, Xipu Campus, SWJTU