Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local Euler obstructions of toric varieties   We use Matsui and Takeuchi's formula for toric A-discriminants to give
algorithms for computing local Euler obstructions and dual degrees of toric
surfaces and 3-folds. In particular, we consider weighted projective spaces. As
an application we give counterexamples to a conjecture by Matsui and Takeuchi.
As another application we recover the well-known fact that the only defective
normal toric surfaces are cones.

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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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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: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: supr-con