English

Groups with isomorphic fibered Burnside rings

Group Theory 2023-05-04 v2 Representation Theory

Abstract

Let GG and HH be finite groups. We give a condition on GG and HH that implies that the AA-fibered Burnside rings BA(G)B^A(G) and BA(H)B^A(H) are isomorphic. As a consequence, we show the existence of non-isomorphic groups GG and HH such that BA(G)B^A(G) and BA(H)B^A(H) are isomorphic rings. Here, the abelian fiber group AA can be chosen in a non-trivial way, that is, such that BA(G)B^A(G) and BA(H)B^A(H) are strictly bigger than the Burnside rings of GG and HH, for which such counterexamples are already known.

Keywords

Cite

@article{arxiv.2209.11692,
  title  = {Groups with isomorphic fibered Burnside rings},
  author = {Robert Boltje and Benjamín García},
  journal= {arXiv preprint arXiv:2209.11692},
  year   = {2023}
}
R2 v1 2026-06-28T01:58:47.560Z