Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A categorification of the ribbon element in quantum sl(2)   We define a bicomplex whose Euler characteristic is the idempotented version
of the ribbon element of quantum sl(2). We show that properties of this
bicomplex descend to the centrality, invertibility and symmetries of the ribbon
element after decategorification.

26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat