Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Star-shaped distributions and their generalizations   Elliptically contoured distributions can be considered to be the
distributions for which the contours of the density functions are proportional
ellipsoids. We generalize elliptically contoured densities to ``star-shaped
distributions'' with concentric star-shaped contours and show that many results
in the former case continue to hold in the more general case. We develop a
general theory in the framework of abstract group invariance so that the
results can be applied to other cases as well, especially those involving
random matrices.

19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph