Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Positivity of the cotangent sheaf of singular Calabi-Yau varieties   We prove that the tangent and the reflexivized cotangent sheaves of any
normal projective klt Calabi-Yau or irreducible holomorphic symplectic variety
are not pseudoeffective, generalizing results of A. H\"oring and T. Peternell
arXiv:1710.06183v2 [math.AG]. We provide examples of Calabi-Yau varieties of
small dimension with singularities in codimension 2.

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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: plasm-ph