convex projective geometry 1geometric decomposition 1locally symmetric spaces 1real hyperbolic manifolds 1Thurston geometries 1
From the 1 of 2 linked papers with an AI index.
2 papers
math.GT2026
Convex projective manifolds, symmetric spaces and geometric decompositions
Stefano Riolo, Andrea Seppi, Leone Slavich
The authors show that any closed, indecomposable, properly convex real projective 4‑manifold that is geometric or admits a Thurston‑type geometric decomposition must consist of rea…
math.GT2026
A cusped hyperbolic 4-manifold without spin structures
Stefano Riolo, Edoardo Rizzi
We build a non-compact, orientable, hyperbolic four-manifold of finite volume that does not admit any spin structure.