Spring 2015, Thursdays, Blocker 506A, 4:00-4:50 PM

Date: March 11

"  When are balls convex? "
  Jennifer Anderson  


Although convexity is not preserved under holomorphic changes of coordinates, the Riemann mapping theorem provides us with a means to characterize which planar domains are equivalent to convex ones. Unfortunately, this theorem does not immediately generalize to higher dimensions. Recently, there has been some work done to characterize those domains that are equivalent to convex domains. I will discuss some of the history of this problem and recent results about the images of various ${\scriptstyle l^p}$ balls under the symmetrization map, ${\scriptscriptstyle(z_1,z_2)\to(z_1+z_2,z_1z_2)}$.