Bicompact torsion classes and conjectures on brick infinite algebras
Representation Theory
2026-04-07 v1
Abstract
A torsion class of the module category of a finite dimensional algebra over a field is said to be compact if there exists a module such that is the smallest torsion class containing . If a torsion class satisfies this and the dual condition, then we call it a bicompact torsion class. We conjecture that bicompact torsion classes are precisely functorially finite torsion classes, and prove it for hereditary algebras and also for semistable torsion classes. This gives that Demonet Conjecture implies Enomoto Conjecture, both of which are important conjectures on brick infiniteness.
Cite
@article{arxiv.2604.04505,
title = {Bicompact torsion classes and conjectures on brick infinite algebras},
author = {Sota Asai},
journal= {arXiv preprint arXiv:2604.04505},
year = {2026}
}
Comments
11 pages