Current

Convex sets can have interior hot spots

A homogeneous, insulated object with a non-uniform initial tempera- ture will eventually reach thermal equilibrium. The Hot Spots conjecture addresses which point in the object takes the longest to reach this equi- librium: Where is the maximum temperature attained as time progresses? Rauch initially conjectured that points attaining the maximum temperature would approach the boundary for larger times. Burdzy and Werner disproved the conjecture for planar domains with holes. Kawohl, and later Ban ̃uelos- Burdzy, conjectured that the conjecture should still hold for convex sets of all dimensions. This talk will draw inspiration from a recurrent theme in convex anal- ysis: almost every dimension-free result in convex analysis has a natural log-concave extension. We will motivate and construct the log-concave ana- log of the Hot Spots conjecture, and then disprove it. Using this log-concave construction, we will show that the hot spots conjecture for convex sets is false in high dimensions.

Camille Jordan Institute in Lyon (Analysis Seminar)

University of Edinburgh (Analysis Seminar)

Virginia Tech (Analysis Seminar)

Simon's collaboration on wave localization: Annual Meeting.

MPS Workshop on Computation in Mathematics