Welcome to SPP 2026
This is the platform of a coordinated research programme in mathematics, funded by the German Research Foundation (DFG). It comprises 80 research projects in the fields of differential geometry, geometric topology, and global analysis. More than 80 researchers from doctoral to professorial level and based at more than 20 German and Swiss universities are represented in this programme.
Latest publications
The Relative Fermionic Entropy in Two-Dimensional Rindler Spacetime
Felix Finster, Albert Much
The fermionic relative entropy in two-dimensional Rindler spacetime is studied using both modular theory and the reduced one-particle density…
Notions of Fermionic Entropies for Causal Fermion Systems
Felix Finster, Robert H. Jonsson, Magdalena Lottner, Albert Much, Simone Murro
The fermionic von Neumann entropy, the fermionic entanglement entropy and the fermionic relative entropy are defined for causal fermion systems. Our…
Ricci flow from singular spaces with bounded curvature
Diego Corro, Adam Moreno and Masoumeh Zarei
We show the existence of a solution to the Ricci flow with a compact length space of bounded curvature, i.e., a space that has curvature bounded above…
Cheeger deformations for Lie groupoid actions
Diego Corro
We give an extension of Cheeger's deformation techniques for smooth Lie group actions on manifolds to the setting of singular Riemannian foliations…