Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The hard potential relativistic Boltzmann equation in the whole space   We study the Cauchy problem for the relativistic Boltzmann equation near
relativistic Maxwellians in the whole space. The purpose of this article is to
handle hard potentials, and for initial data with finite $L^\infty$ norm, to
construct global in time mild solutions. We also prove the optimal time decay
rates of the solutions.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int