Locally isotropic Steinberg groups II. Schur multipliers
Group Theory
2026-05-08 v3 K-Theory and Homology
Abstract
We compute Schur multipliers of locally isotropic Steinberg groups and of all root graded Steinberg groups with root systems of rank at least (excluding the types and ). As an application, we show that locally isotropic Steinberg groups are well defined as abstract groups.
Cite
@article{arxiv.2507.04519,
title = {Locally isotropic Steinberg groups II. Schur multipliers},
author = {Egor Voronetsky},
journal= {arXiv preprint arXiv:2507.04519},
year = {2026}
}
Comments
Rewritten section 4.2 and added lemma 23