Mathematics Colloquium

All colloquia are on Fridays at 4:00 pm in Van Vleck B239, unless otherwise indicated.

Spring 2019

date	speaker	title	host(s)
Jan 25	Beata Randrianantoanina (Miami University Ohio) WIMAW	TBA	Tullia Dymarz
Jan 30 Wednesday	Lillian Pierce (Duke University)	TBA	Boston and Street
Jan 31 Thursday	Dean Baskin ( Texas A&M)	TBA	Street
Feb 1	Jianfeng Lu (Duke University)	TBA	Qin
Feb 5 Tuesday	Alexei Poltoratski (Texas A&M University)	TBA	Denisov
Feb 8	Aaron Naber (Northwestern)	A structure theory for spaces with lower Ricci curvature bounds	Street
Feb 15		TBA
Feb 22	Angelica Cueto (Ohio State)	TBA	Erman and Corey
March 4	Vladimir Sverak (Minnesota) Wasow lecture	TBA	Kim
March 8	Jason McCullough (Iowa State)	TBA	Erman
March 15	Maksym Radziwill (Caltech)	TBA	Marshall
March 29	Jennifer Park (OSU)	TBA	Marshall
April 5	Ju-Lee Kim (MIT)	TBA	Gurevich
April 12	Evitar Procaccia (TAMU)	TBA	Gurevich
April 19	Jo Nelson (Rice University)	TBA	Jean-Luc
April 26	Kavita Ramanan (Brown University)	TBA	WIMAW
May 3	Tomasz Przebinda (Oklahoma)	TBA	Gurevich

Abstracts

Aaron Naber (Northwestern)

Title: A structure theory for spaces with lower Ricci curvature bounds.

Abstract: One should view manifolds (M^n,g) with lower Ricci curvature bounds as being those manifolds with a well behaved analysis, a point which can be rigorously stated. It thus becomes a natural question, how well behaved or badly behaved can such spaces be? This is a nonlinear analogue to asking how degenerate can a subharmonic or plurisubharmonic function look like. In this talk we give an essentially sharp answer to this question. The talk will require little background, and our time will be spent on understanding the basic statements and examples. The work discussed is joint with Cheeger, Jiang and with Li.