Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A closed-form formula for the Kullback-Leibler divergence between Cauchy
  distributions   We report a closed-form expression for the Kullback-Leibler divergence
between Cauchy distributions which involves the calculation of a novel definite
integral. The formula shows that the Kullback-Leibler divergence between Cauchy
densities is always finite and symmetric.

30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat