Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deformations of Semisimple Bihamiltonian Structures of Hydrodynamic Type   We classify in this paper infinitesimal quasitrivial deformations of
semisimple bihamiltonian structures of hydrodynamic type.

14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph