Stefan Haller

Stefan Haller is a Senior Lecturer at the Faculty of Mathematics, affiliated with the Institute of Mathematics. His research spans differential geometry, symplectic structures, and topological invariants, with a focus on coadjoint orbits, sub-Riemannian geometry, and analytic torsion. He leads projects such as Analytical torsion of (2,3,5) distributions (2025–2029) and Analytical torsion of filtered manifolds (2019–2023).

Stefan’s work explores manifolds, diffeomorphism groups, and coadjoint orbits, with key contributions to sub-Riemannian geometry and symplectic fiber bundles. His recent publications highlight the interplay between geometric structures and spectral invariants, particularly in filtered manifolds and (2,3,5) distributions.

The 15 most recent articles emphasize differential geometry, symplectic geometry, and topology, analyzing topics like BGG sequences, nonlinear flag manifolds, and analytic eigenbranches. These works reflect his dedication to understanding geometric and topological properties of manifolds through algebraic and spectral methods.

Stefan actively participates in academic activities, including invited lectures on spectral invariants and sub-Riemannian geometry at international conferences (2025). His collaborations, such as with C. Vizman, underscore his role in advancing geometric analysis.