Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two properties of vectors of quadratic forms in Gaussian random
  variables   We study distributions of random vectors whose components are second order
polynomials in Gaussian random variables. Assuming that the law of such a
vector is not absolutely continuous with respect to Lebesgue measure, we derive
some interesting consequences. Our second result gives a characterization of
limits in law for sequences of such vectors.

9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th