Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deletion-restriction for sheaf homology of graded atomic lattices   We give a long exact sequence for the homology of a graded atomic lattice
equipped with a sheaf of modules, in terms of the deleted and restricted
lattices. This is then used to compute the homology of the arrangement lattice
of a hyperplane arrangement equipped with the natural sheaf. This generalises
an old result of Lusztig.

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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: econ
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
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The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg