Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Noncommutative identities   This is a slightly edited version of my talk on Mathematische Arbeitstagung
2011, Bonn. I present a result relating noncommutative Laurent polynomials with
algebraic functions, and show examples of integrability and Laurent phenomenon
for free noncommutative variables.

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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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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: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph