Let A be a finite-dimensional, basic, connected algebra over an algebraically closed field. Denote by Γ(A) the Auslander-Reiten quiver of A. We show that A is representation-finite if and only if Γ(A) has at most finitely many vertices lying on oriented cycles and finitely many orbits with respect to the action of the Auslander-Reiten translation.
@article{bwmeta1.element.bwnjournal-article-fmv140i1p31bwm, author = {Andrzej Skowro\'nski and M. Wenderlich}, title = {A characterization of representation-finite algebras}, journal = {Fundamenta Mathematicae}, volume = {138}, year = {1991}, pages = {31-34}, zbl = {0808.16020}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv140i1p31bwm} }
Skowroński, Andrzej; Wenderlich, M. A characterization of representation-finite algebras. Fundamenta Mathematicae, Tome 138 (1991) pp. 31-34. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv140i1p31bwm/
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