Homological stability for automorphisms of symmetric bilinear forms

Fuente: arXiv
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Main Author: Nadig, Vikram
Format: Preprint
Published: 2025
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author Nadig, Vikram
author_facet Nadig, Vikram
contents We establish homological stability for automorphisms of symmetric bilinear forms over a class of principal ideal domains that includes all fields, the integers, the Gaussian integers, and the Eisenstein integers. In conjunction with Grothendieck-Witt theoretic calculations, this determines a large part of the stable cohomology of the odd orthogonal groups $O_{\langle g,g \rangle}(\mathbb Z)$ in low degrees.
format Preprint
id arxiv_https___arxiv_org_abs_2512_13469
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Homological stability for automorphisms of symmetric bilinear forms
Nadig, Vikram
Algebraic Topology
Group Theory
K-Theory and Homology
We establish homological stability for automorphisms of symmetric bilinear forms over a class of principal ideal domains that includes all fields, the integers, the Gaussian integers, and the Eisenstein integers. In conjunction with Grothendieck-Witt theoretic calculations, this determines a large part of the stable cohomology of the odd orthogonal groups $O_{\langle g,g \rangle}(\mathbb Z)$ in low degrees.
title Homological stability for automorphisms of symmetric bilinear forms
topic Algebraic Topology
Group Theory
K-Theory and Homology
url https://arxiv.org/abs/2512.13469