Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Torsion pairs and quasi-abelian categories   We define torsion pairs for quasi-abelian categories and give several
characterisations. We show that many of the torsion theoretic concepts
translate from abelian categories to quasi-abelian categories. As an
application, we generalise the recently defined algebraic Harder-Narasimhan
filtrations to quasi-abelian categories.

26
The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
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The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th