English

On Christophersen's problem

Commutative Algebra 2025-12-09 v1

Abstract

Let AA be a finite-dimensional (Artinian) Gorenstein algebra, and let Aut(A)\operatorname{Aut}(A)^{\circ} denote the connected component of the identity in the automorphism group of AA. We introduce a new subclass of Gorenstein algebras and prove that for any algebra AA in this subclass, the group Aut(A)\operatorname{Aut}(A)^{\circ} is solvable. This result is closely related to the Christophersen problem in the theory of local algebras.

Keywords

Cite

@article{arxiv.2512.06436,
  title  = {On Christophersen's problem},
  author = {Roman Stasenko},
  journal= {arXiv preprint arXiv:2512.06436},
  year   = {2025}
}
R2 v1 2026-07-01T08:13:00.081Z