Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Twisted split category algebras as quasi-hereditary algebras   A category is called {\em split} if for every morphism $s\colon X\to Y$ there
exists a morphism $t\colon Y\to X$ such that $s\circ t\circ s = s$. Let $C$ be
a finite split category, let $k$ be a field of characteristic 0 and let
$\alpha$ be a 2-cocycle of $C$ with values in the unit group of $k$. Then the
twisted category algebra $k_\alpha C$ is a quasi-hereditary algebra.

29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph