Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extensions of vector bundles and rationality of certain moduli spaces of
  stable bundles   In this paper, it is proved that certain stable rank-3 vector bundles can be
written as extensions of line bundles and stable rank-2 bundles. As an
application, we show the rationality of certain moduli spaces of stable rank-3
bundles over the projective plane P^2.

25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph