Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Vertex on a Strip   We demonstrate that for a broad class of local Calabi-Yau geometries built
around a string of IP^1's - those whose toric diagrams are given by
triangulations of a strip - we can derive simple rules, based on the
topological vertex, for obtaining expressions for the topological string
partition function in which the sums over Young tableaux have been performed.
By allowing non-trivial tableaux on the external legs of the corresponding web
diagrams, these strips can be used as building blocks for more general
geometries. As applications of our result, we study the behavior of topological
string amplitudes under flops, as well as check Nekrasov's conjecture in its
most general form.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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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: mtrl-th
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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: cs