Normal Structure of Isotropic Odd Orthogonal Groups

Fuente: arXiv
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Main Author: Danilevich, Leonid
Format: Preprint
Published: 2026
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author Danilevich, Leonid
author_facet Danilevich, Leonid
contents Let $(M, q)$ be a quadratic projective module of an odd rank over an commutative ring, where the form $q$ is semiregular, with global Witt index of at least $2$, and with $\mathrm{rk}(M) \ge 7$. We prove standard commutator formulae and classify $\mathrm{EO}$-normal subgroups of $\mathrm{O}(M, q)$ without assumption of $2$ being invertible.
format Preprint
id arxiv_https___arxiv_org_abs_2601_00763
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Normal Structure of Isotropic Odd Orthogonal Groups
Danilevich, Leonid
Group Theory
Let $(M, q)$ be a quadratic projective module of an odd rank over an commutative ring, where the form $q$ is semiregular, with global Witt index of at least $2$, and with $\mathrm{rk}(M) \ge 7$. We prove standard commutator formulae and classify $\mathrm{EO}$-normal subgroups of $\mathrm{O}(M, q)$ without assumption of $2$ being invertible.
title Normal Structure of Isotropic Odd Orthogonal Groups
topic Group Theory
url https://arxiv.org/abs/2601.00763