Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Separable morphisms of simplicial sets   We show that the class of separable morphisms in the sense of G. Janelidze
and W. Tholen in the case of Galois structure of second order coverings of
simplicial sets due to R. Brown and G. Janelidze coincides with the class of
covering maps of simplicial sets.

20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
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The categories of this paper are: solv-int
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph