Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Commutation relations for truncated Toeplitz operators   For truncated Toeplitz operators, which are compressions of multiplication
operators to model subspaces of the Hardy space $H^2$, we obtain criteria for
commutation relations. The results show an analogy to the case of Toeplitz
matrices, and they extend the theory of Sedlock algebras.

9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
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
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol