Equipe(s) : | gd, |
Responsables : | L. Hauswirth, P. Laurain, R. Souam, E. Toubiana |
Email des responsables : | |
Salle : | 1013 |
Adresse : | Sophie Germain |
Description |
Orateur(s) | Marc SORET - Université de Tours, |
Titre | On stable minimal surfaces in R4 |
Date | 09/11/2020 |
Horaire | 13:30 à 15:00 |
Diffusion | https://bbb-front.math.univ-paris-diderot.fr/recherche/pau-6ha-of4-mea |
Résume | The Gauss map of a surface in R4 takes its values in the grassmannian G+(2, 4) - isometric to S2(1/ √2) × S2(1/ √2) . We show if the Gauss map image of a minimal surface is of area less than π when pro- jected on each sphere, then the surface is stable for deformations with fixed boundary. This extends to minimal surfaces in R4 of any genus a result of Barbosa and do Carmo, (see also Hoffman Osserman). |
Salle | 1013 |
Adresse | Sophie Germain |