Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Algebraic analysis of linear systems with double type of perturbations   Linear systems under the influence of nonlinear and random linear
perturbations, and with random initial and boundary conditions, are discussed.
The notion of states of a system is substituted by the notion of the generating
vectors for n-point information (n-pi), n=0,1,2,..., characterizing a system at
different space-time points. A complete system of equations for physical n-pi
are derived and certain universal expansions are proposed.

8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga