Abstract: In this talk, we will exhibit a series of regularity results and structure theory for collapsing metric spaces with lower Ricci curvature and mixed curvature bounds. These results are new even in the smooth setting. 

Biography: Ruobing Zhang got his PhD at Princeton University in 2016. Later he became a postdoc fellow at Stony Brook University, an assistant professor at Princeton University, an associate professor at the University of Wisconsin-Madison. He is an associate professor at UC San Diego. His research interests are in differential geometry and geometric analysis. 

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