Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The C*-algebra of the variable Mautner group   Let $\M=P\times{M}$ be a variable Mautner group. We describe the
$C^*$-algebra $C^*(\M)$ of $\M$ in terms of an algebra of operator fields
defined over $P\times{\C^2} $.

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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
12
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-ex
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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: cs