Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mather invariants in groups of piecewise-linear homeomorphisms   We describe the relation between two characterizations of conjugacy in groups
of piecewise-linear homeomorphisms, discovered by Brin and Squier in [2] and
Kassabov and Matucci in [5]. Thanks to the interplay between the techniques, we
produce a simplified point of view of conjugacy that allows us to easily
recover centralizers and lends itself to generalization.

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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
37
The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: physics
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin