Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The wave model of the Sturm-Liouville operator on an interval   In the paper we construct the wave functional model of a symmetric
restriction of the regular Sturm-Liouville operator on an interval. The model
is based upon the notion of the wave spectrum and is constructed according to
an abstract scheme which was proposed earlier. The result of the construction
is a differential operator of the second order on an interval, which differs
from the original operator only by a simple transformation.

36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th