Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Compact real linear operators   Real linear operators emerge in a range of mathematical physics applications.
In this paper spectral questions of compact real linear operators are
addressed. A Lomonosov-type invariant subspace theorem for antilinear compact
operators is proved. Properties of the characteristic polynomial of a finite
rank real linear operator are investigated. A related numerical function,
defined as a normalization of the characteristic polynomial, is studied. An
extension to trace-class operators is discussed.

22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex