Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reflections and torsion theories for selfinjective algebras   We introduce the notion of reflections for selfinjective algebras from the
point of view of torsion theories induced by two-term tilting complexes. As an
application, we determine the transformations of Brauer trees associated with
reflections. In particular, we provide a way to transform every Brauer tree
into a Brauer line.

12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex