Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constructible Sheaves   This article contains a proof of the basic lemma. This lemma, discovered by
Beilinson, yields a motivic proof of the Andreotti-Frankel theorem for affine
varieties. Next, it is shown that the category of Cohomologically Constructible
Sheaves (as it is referred to in the Riemann-Hilbert correspondence) coincides
with the derived category of bounded complexes of constructible sheaves. It is
also shown that higher direct images and the sheaf-Ext groups are effaceable in
the category of constructible sheaves.

8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
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The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph