Almost recognizability by spectrum of simple exceptional groups of Lie type
Group Theory
2021-01-01 v2
Abstract
The spectrum of a finite group is the set of its elements orders. Groups are said to be isospectral if their spectra coincide. For every finite simple exceptional group , we prove that each finite group isospectral to is isomorphic to a group squeezed between and its automorphism group, that is ; in particular, up-to isomorphism, there are only finitely many such groups. This assertion, together with a series of previously obtained results, implies that the same is true for every finite simple exceptional group except the group .
Keywords
Cite
@article{arxiv.1409.2967,
title = {Almost recognizability by spectrum of simple exceptional groups of Lie type},
author = {Andrey V. Vasil'ev and Alexey M. Staroletov},
journal= {arXiv preprint arXiv:1409.2967},
year = {2021}
}
Comments
minor changes, Tables 2 and 3 are fixed