Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On analyticity of incompressible viscid fluid flow in n-dimensional
  torus   We prove that the evolutionary Navier-Stokes equation in n-D torus with
initial data in the class of distributions has an unique solution (local in t)
that is analytic by all variables. This solution presents as a series globally.

0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex