Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure of Group Invariants of a Quasiperiodic Flow   The multiplier representation of the generalized symmetry group of a
quasiperiodic flow on the n-torus defines, for each subgroup of the multiplier
group of the flow, a group invariant of the smooth conjugacy class of that
flow. This group invariant is the internal semidirect product of a subgroup
isomorphic to the n-torus by a subgroup isomorphic to that subgroup of the
multiplier group. Each subgroup of the multiplier group is a multiplicative
group of algebraic integers of degree at most n, which group is isomorphic to
an abelian group of n by n unimodular matrices.

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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an