Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matrix valued truncated Toeplitz operators: basic properties   Matrix valued truncated Toeplitz operators act on vector-valued model spaces.
They represent a generalization of block Toeplitz matrices. A characterization
of these operators analogue to the scalar case is obtained, as well as the
determination of the symbols that produce the zero operator.

28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga