Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anti-holomorphic twistor and Symplectic structure   It is well known that the twisters, section of twister space, classify the
almost complex structure on even dimensional Riemannian manifold $X$.
  In this paper, it will be proved that a harmonic and anti-holomorphic twister
is equivalent ti a symplectic structure on $X$.

31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph