Über die Automorphismengruppen von Banach-Mannigfaltigkeiten mit invarianter Metrik.
Un contre-exemple à la conjecture de Seifert
Unicity of the Lie product
Unit vector fields on antipodally punctured spheres: big index, big volume
We establish in this paper a lower bound for the volume of a unit vector field defined on , . This lower bound is related to the sum of the absolute values of the indices of at and .