Blandine Galiay

collaborators

5 papers

math.GR2026

Metric properties of domains in real-type Nagano spaces

Blandine Galiay

Nagano spaces are compact symmetric spaces that admit large transformation groups. They include for instance all the Grassmannians and the Einstein Universes. In this paper, we stu…

math.DG2026

Completeness of closed Kleinian flat Pseudo-Riemannian Manifolds of Signature (2,2)

Farid Diaf, Blandine Galiay, Malek Hanounah

Let $R^{2, 2}$ denote the model space of flat pseudo-Riemannian manifolds of signature $(2, 2)$ . We prove that the only domain divisible by a discrete subgroup of the isomet…

math.DG2025

Proper Almost-Homogeneous Domains of the Einstein Universe

Adam Chalumeau, Blandine Galiay

The Einstein universe $Ein^{p, q}$ of signature $(p, q)$ is a pseudo-Riemannian analogue of the conformal sphere; it is the conformal compactification of the pseudo-Riemanni…

math.GR2025

Rigidity of proper almost-homogeneous domains in positive flag manifolds

Blandine Galiay

We show that, inside the Shilov boundary of any given Hermitian symmetric space of tube type, there is, up to isomorphism, only one proper domain such that every point on its bound…

math.RT2025

Transverse groups preserving proper domains in flag manifolds

Blandine Galiay

Given a semisimple Lie group $G$ and a self-opposite flag manifold $F$ of $G$ , we establish a necessary condition for an infinite subgroup $H$ of $G$ to preserve a proper…