Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical deformation of 2+1 dimensional double torus universe   In (2+1)-dimensional pure gravity with cosmological constant, the dynamics of
double torus universe with pinching parameter is investigated. Each mode of
affine stretching deformation is illustrated in the context of horizontal
foliation along the holomorphic quadratic differential. The formulation of the
Einstein Hilbert action for the parameters of the affine stretching is
developed. Then the dynamics along one holomorphic quadratic differential will
be solved concretely.

20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol