Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On spectral assignment for neutral type systems   For a large class of linear neutral type systems the problem of eigenvalues
and eigenvectors assignment is investigated, i.e. finding the system which has
the given spectrum and almost all, in some sense, eigenvectors.

0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga