Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Categorification of Dijkgraaf-Witten Theory   The goal of the paper is to categorify Dijkgraaf-Witten theory, aiming at
providing foundation for a direct construction of Dijkgraaf-Witten theory as an
Extended Topological Quantum Field Theory. The main tool is cohomology with
coefficients in a Picard groupoid, namely the Picard groupoid of hermitian
lines.

18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph