Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chen-Ruan cohomology of M_{1,n} and \bar{M}_{1,n}   In this work we compute the Chen--Ruan cohomology and the stringy Chow ring
of the moduli spaces of smooth and stable $n$-pointed curves of genus 1. We
suggest a definition for an Orbifold Tautological Ring in genus 1, which is
both a subring of the Chen--Ruan cohomology and of the stringy Chow ring.

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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat