Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalizations on a Problem of Saffari   We provide a generalization of a problem first considered by Saffari and
fully solved by Saffari, Erd\H{o}s and Vaughan on direct factor pairs, to
arbitrary finite families of direct factors, and solve it using a method of
Daboussi. We end with a few related open problems.

34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom