Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gromov-Witten theory of product stacks   Let $\mathcal{X}_1$ and $\mathcal{X}_2$ be smooth proper Deligne-Mumford
stacks with projective coarse moduli spaces. We prove a formula for orbifold
Gromov-Witten invariants of the product stack $\mathcal{X}_1\times
\mathcal{X}_2$ in terms of Gromov-Witten invariants of the factors
$\mathcal{X}_1$ and $\mathcal{X}_2$. As an application, we deduce a
decomposition result for Gromov-Witten theory of trivial gerbes.

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The categories of this paper are: q-bio
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The categories of this paper are: cs
37
The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
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The categories of this paper are: adap-org