Transitions de phase et équations non locales

Distances entre classes d'homotopie de $W^{s,p}(S^N,S^N)$/Distances between homotopy classes of $W^{s,p}(S^N,S^N)$

27 avr. 2018, 10:00

1h

Orateur

Itai Shafrir (Technion-Israel Institute of Technology, Israël)

Description

When $sp\ge N$ the space $W^{s,p}(S^N,S^N)$ can be decomposed into homotopy classes according to the degree of the maps. We consider two natural distances between different classes. We prove estimates, and in some cases even explicit formulas, for these distances. Most of the work is joint with Haim Brezis (Rutgers and Technion) and Petru Mironescu (Lyon 1).

Documents de présentation

Transparents

Itai_Shafrir.pdf