Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Eigenfunction expansions associated with operator differential equation
  depending on spectral parameter nonlinearly   For operator differential equation which depends on the spectral parameter in
the Nevanlinna manner we obtain the expansions in eigenfunctions.

13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th