Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on strong protomodularity, actions and quotients   In order to study the problems of extending an action along a quotient of the
acted object and along a quotient of the acting object, we investigate some
properties of the fibration of points. In fact, we obtain a characterization of
protomodular categories among quasi-pointed regular ones, and, in the
semi-abelian case, a characterization of strong protomodular categories.
Eventually, we return to the initial questions by stating the results in terms
of internal actions.

18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol