Infinitesimal rigidity of a compact hyperbolic 4–orbifold with totally geodesic boundary

Tarik Aougab, Peter A Storm
2009 Algebraic and Geometric Topology  
Kerckhoff and Storm conjectured that compact hyperbolic n-orbifolds with totally geodesic boundary are infinitesimally rigid when n>3. This paper verifies this conjecture for a specific example based on the 4-dimensional hyperbolic 120-cell.
doi:10.2140/agt.2009.9.537 fatcat:thuozqrbhzcjfkqetp6mnau7au