Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The symplectic structure on the moduli space of line bundles on a
  noncommutative Azumaya surface   In this note we prove that the moduli space of torsion-free modules of rank
one over an Azumaya algebra on a K3-surface is an irreducible symplectic
variety deformation equivalent to a Hilbert scheme of points on the K3-surface.

33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th