classification 1compact quotients 1discrete subgroups 1isometry groups 1pseudo-riemannian geometry 1symmetric spaces 1
From the 1 of 3 linked papers with an AI index.
3 papers
math.DG2026
Pseudo-Riemannian symmetric spaces of signature (2,2)
Ines Kath, Matti Lyko
The paper classifies all four‑dimensional simply‑connected indecomposable non‑semisimple pseudo‑Riemannian symmetric spaces with signature (2,2), provides explicit models, computes…
math.DG2025
Left-invariant -structures of type III
Viviana del Barco, Ana Cristina Ferreira, Ines Kath
We investigate left-invariant -structures on 7-dimensional Lie groups, focusing on those whose holonomy algebras are indecomposable and of type III, the latter meaning…
math.DG2024
Topology and Dynamics of compact plane waves
Malek Hanounah, Ines Kath, Lilia Mehidi +1
We study compact locally homogeneous plane waves. Such a manifold is a quotient of a homogeneous plane wave by a discrete subgroup of its isometry group. This quotient is calle…