Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Kramers-Fokker-Planck equation with decreasing potentials in
  dimension one   For quickly decreasing potentials with one position variable, the first
threshold zero is always a resonance of the Kramers-Fokker-Planck operator. In
this article we study low-energy spectral properties of the operator and
calculate large time asymptotics of solutions in terms of the Maxwellian.

25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org