Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Truncated moment problems for $J$-self-adjoint, $J$-skew-self-adjoint
  and $J$-unitary operators   In this paper we study truncated moment problems for $J$-self-adjoint,
$J$-skew-self-adjoint and $J$-unitary operators. Conditions of the solvability
are given. Some canonical solutions of the moment problems are constructed. As
a by-product, some extension results for $J$-skew-symmetric and $J$-isometric
operators are obtained.

16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga