题目: A discussion on discrete curvature
报告人：刘世平
时间：12:00
地点：1518
摘要: Various different kinds of discrete curvature notions has been studied. We will briefly discuss three of them: The combinatorial curvature is an analogue of Gauss curvature of surfaces, while Ollivier's and Bakry-/"Emery's curvature are synthetic Ricci curvature notions. In particular, we mention Bonnet-Meyers type diameter estimates for all the three notions.