Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Equational theories of endomorphism monoids of categories with a
  topological flavor   It is shown that the endomorphism monoids of the category $2\mathfrak{Cob}$
of all $2$-cobordisms do not have finitely axiomatizable equational theories.
The same holds for the {topological annular category} and various quotients of
the latter, like the affine Temperley--Lieb category. Analogous results are
obtained for versions with the algebraic signature enriched by involutions.
Von-Neumann-regular extensions of these categories are also considered.

14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat