Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Notion of a Ribbon Quasi-Hopf Algebra   We show that two competing definitions of a ribbon quasi-Hopf algebra are
actually equivalent. Along the way, we look at the Drinfel'd element from a new
perspective and use this viewpoint to derive its fundamental properties.

27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org