Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On abelian subcategories of triangulated categories   The stable module category of a selfinjective algebra is triangulated, but
need not have any nontrivial $t$-structures, and in particular, full abelian
subcategories need not arise as hearts of a $t$-structure. The purpose of this
paper is to investigate full abelian subcategories of triangulated categories
whose exact structures are related, and more precisely, to explore relations
between invariants of finite-dimensional selfinjective algebras and full
abelian subcategories of their stable module categories.

19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat