Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On series of free $R$-diagonal operators   For a series of free $R$-diagonal operators, we prove an analogue of the
three series theorem. We show that a series of free $R$-diagonal operators
converges almost uniformly if and if two numerical series converge.

20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex