Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An explicit characterization of arc-transitive circulants   A reductive characterization of arc-transitive circulants was given
independently by Kovacs in 2004 and the first author in 2005. In this paper, we
give an explicit characterization of arc-transitive circulants and their
automorphism groups. Based on this, we give a proof of the fact that
arc-transitive circulants are all CI-digraphs.

14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th