Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On a property of norming constants of Sturm-Liouville problem   A connection, which shows the dependence of norming constants on boundary
conditions, was found using the Gelfand-Levitan method for the solution of
inverse Sturm-Liouville problem.

1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat