Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Positive Dehn Twist Expression for a $\mathbb{Z}_3$ action on $\Sigma_g$   A positive Dehn twist product for a $\mathbb{Z}_3$ action with $g+2$ fixed
points on the 2-dimensional closed, compact, oriented surface $\Sigma_g$ is
presented. The homeomorphism invariants of the resulting symplectic 4-manifolds
are computed.

21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn