classification 1compact quotients 1discrete subgroups 1isometry groups 1pseudo-riemannian geometry 1symmetric spaces 1
From the 1 of 2 linked papers with an AI index.
2 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.KT2026
Uniformly elliptic boundary value problems
Matti Lyko
We study boundary conditions for elliptic operators on non-compact manifolds with boundary via uniform K-homology, a version of K-homology sensitive to the large-scale geometry of…