Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deformation theory of orthogonal and symplectic sheaves   We show that the space of first-order deformations of an orthogonal (resp.
symplectic) sheaf over a smooth projective scheme is the first hypercohomology
space of a complex which is naturally constructed out of the orthogonal (resp.
symplectic) sheaf. We also provide an obstruction theory of these objects whose
target is the second hypercohomology space of this complex.

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The categories of this paper are: hep-th
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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: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom