Emanuele Di Bella

collaborators

2 papers

math.RT2026

Classification of nilpotent and semisimple fourvectors of a real eight-dimensional space

Emanuele Di Bella, Willem A. de Graaf, Andrea Santi

In 1981 Antonyan classified the orbits of SL $(8, C)$ on $⋀^{4} C^{8}$ . This is an example of a $I^¸$ -group action as introduced and studied by Vinberg. The orbi…

hep-th2026

Some rigidity results for supergravity backgrounds in 11 dimensions

Emanuele Di Bella, Willem A. de Graaf, Andrea Santi

This paper is a contribution to the supersymmetry gap problem for supergravity backgrounds $(M, g, F)$ in $11$ dimensions. We study restrictions on the curvature of $(M, g, F)$ and, us…