University of Wisconsin-Madison
Monday, February 21, 2022 - 12:00pm
Zoom Meeting ID: 928 3597 1183. Passcode: last 4 digits of the zoom meeting in reverse order
Consider families of spherical means where the radii are restricted to a given subset of a compact interval. One is interested in the L^p improving estimates for the associated maximal operators and related objects. Results depend on several notions of fractal dimension of the dilation set, or subsets of it. There are some unexpected statements on the shape of the possible type sets. Joint works with J. Roos, and with T. Anderson, K. Hughes and J. Roos.