Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantitative linearized study of the Boltzmann collision operator and
  applications   We present recent results [4, 28, 29] about the quantitative study of the
linearized Boltzmann collision operator, and its application to the study of
the trend to equilibrium for the spatially homogeneous Boltzmann equation for
hard spheres.

9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph