Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The holomorphic symplectic structures on hyper-Kaehler manifolds of type
  A_{\infty}   We study the holomorphic symplectic structures on hyper-Kaehler manifolds of
type A_{\infty}, by using the torus action.

29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn