Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bounds for the ratio of two gamma functions--From Wendel's and related
  inequalities to logarithmically completely monotonic functions   In this expository and survey paper, along one of main lines of bounding the
ratio of two gamma functions, we look back and analyse some inequalities,
several complete monotonicity of functions involving ratios of two gamma or
$q$-gamma functions, and necessary and sufficient conditions for functions
involving ratios of two gamma or $q$-gamma functions to be logarithmically
completely monotonic.

10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org