Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on eigenvalues of a class of singular continuous and discrete
  linear Hamiltonian systems   In this paper, we show that the analytic and geometric multiplicities of an
eigenvalue of a class of singular linear Hamiltonian systems are equal, where
both endpoints are in the limit circle cases. The proof is fundamental and is
given for both continuous and discrete Hamiltonian systems. The method used in
this paper also works for both endpoints are regular, or one endpoint is
regular and the other is in the limit circle case.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio