Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Moduli of Flags of Sheaves and their K-theory   We introduce moduli spaces of flags of sheaves on P^2, and use them to obtain
functors between the derived categories of the usual moduli spaces of sheaves
on P^2. These functors induce an action of the shuffle algebra on K-theory, by
certain explicit formulas.

12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con