Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Oriented Associativity Equations and Symmetry Consistent Conjugate
  Curvilinear Coordinate Nets   This paper is devoted to description of the relationship among oriented
associativity equations, symmetry consistent conjugate curvilinear coordinate
nets, and the widest associated class of semi- Hamiltonian hydrodynamic-type
systems.

36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph