Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conjugations in $L^2$ and their invariants   Conjugations in space $L^2$ of the unit circle commuting with multiplication
by $z$ or intertwining multiplications by $z$ and $\bar z$ are characterized.
We also study their behaviour with respect to the Hardy space, subspaces
invariant for the unilateral shift and model spaces.

29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th