Fanny Kassel

collaborators

2 papers

math.GR2026

Sharpness of proper and cocompact actions on reductive homogeneous spaces

Fanny Kassel, Nicolas Tholozan

We prove that if $G$ is any noncompact connected real reductive linear Lie group, and $I^$ any discrete subgroup of $G$ acting properly discontinuously and cocompactly on some homo…

math.GT2026

Compact quotients of homogeneous spaces and homotopy theory of sphere bundles

Fanny Kassel, Yosuke Morita, Nicolas Tholozan

A reductive homogeneous space $G / H$ is always diffeomorphic to the normal bundle of an orbit of a maximal compact subgroup of $G$ . We prove that if $G / H$ admits compact quotients,…