The equivariant index theorem on Lorentzian spacetimesOberseminar Global Analysis and Operator Algebras

by Lennart Ronge (University of Potsdam)

Tuesday Nov 11, 2025, 2:15 PM → 3:45 PM Europe/Berlin

Endenicher Allee 60/1-008 (Mathezentrum)

The equivariant index is a refinement of the classical 
Fredholm index in the presence of a group action. On Riemannian 
manifolds, there are formulas for the equivariant index of Dirac 
operators. We extend those to Dirac operators on suitable Lorentzian 
manifolds.