Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extension of the Olkin and Rubin Characterization to the Wishart
  distribution on homogeneous cones   The Wishart distribution on an homogeneous cone is a generalization of the
Riesz distribution on a symmetric cone which corresponds to a given graph. The
paper extends to this distribution, the famous Olkin and Rubin characterization
of the ordinary Wishart distribution on symmetric matrices.

8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess