Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MVW-extensions of real quaternionic classical groups   Let $G$ be a real quaternionic classical group $\GL_n(\bH)$, $\Sp(p,q)$ or
$\oO^*(2n)$. We define an extension $\breve G$ of $G$ with the following
property: it contains $G$ as a subgroup of index two, and for every $x\in G$,
there is an element $\breve g\in \breve G\setminus G$ such that $\breve g
x\breve{g}^{-1}=x^{-1}$. This is similar to Moeglin-Vigneras-Waldspurger's
extensions of non-quaternionic classical groups.

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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg