Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the uniqueness of AF diagonals in regular limit algebras   Necessary and sufficient conditions are obtained for the uniqueness of
standard regular AF masas in regular limit algebras up to approximate inner
unitary equivalence.

1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int