3 papers
math.GR2026
Local automorphisms of some classical groups
Lajos Molnár, Peter Šemrl
A map on a group into itself is called a local automorphism if at any two points of the group, it can be interpolated by an automorphism of that group. In this paper we investigate…
math-ph2024
Optimal version of the fundamental theorem of chronogeometry
Michiya Mori, Peter Šemrl
We study lightlikeness preserving mappings from the -dimensional Minkowski spacetime to itself under no additional regularity assumptions like continuity, surjec…
math.FA2018
Isometries of Grassmann spaces, II
Gy. P. Gehér, P. Šemrl
Botelho, Jamison, and Molnár \cite{BJM}, and Geh\' er and Šemrl \cite{GeS} have recently described the general form of surjective isometries of Grassmann spaces of all projections…