Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decay estimates of global solutions to 2D incompressible inhomogeneous
  Navier-Stokes equations with variable viscosity   In this paper, we investigate the time decay behavior to Lions weak solution
of 2D incompressible density-dependent Navier-Stokes equations with variable
viscosity.

32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th