Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A mixed invariant of non-orientable surfaces in equivariant Khovanov
  homology   We construct a mixed invariant of non-orientable surfaces from the Lee and
Bar-Natan deformations of Khovanov homology and use it to distinguish pairs of
surfaces bounded by the same knot, including some exotic examples.

27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio