Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flag Bicolorings, Pseudo-Orientations, and Double Covers of Maps   This paper discusses consistent flag bicolorings of maps and maniplexes, in
their own right and as generalizations of orientations and pseudo-orientations.
Furthermore, a related doubling concept is introduced, and relationships
between these ideas are explored.

21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int