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Biserial algebras via subalgebras and the path algebra of D4
Univ Kiel, D-24098 Kiel, Germany.ORCID iD: 0000-0002-1216-4024
2011 (English)In: Journal of Algebra, ISSN 0021-8693, E-ISSN 1090-266X, Vol. 331, no 1, p. 58-67Article in journal (Refereed) Published
Abstract [en]

We give two new criteria for a basic algebra to be biserial. The first one states that an algebra is biserial iff all subalgebras of the form eAe where e is supported by at most 4 vertices are biserial. The second one gives some condition on modules that must not exist for a biserial algebra. These modules have properties similar to the module with dimension vector (1,1,1,1) for the path algebra of the quiver D4.

Both criteria generalize criteria for an algebra to be Nakayama. They rely on the description of a basic biserial algebra in terms of quiver and relations given by R. Vila-Freyer and W. Crawley-Boevey.

Place, publisher, year, edition, pages
2011. Vol. 331, no 1, p. 58-67
Keywords [en]
Biserial algebra, Dynkin diagram, Subalgebra
National Category
Algebra and Logic
Research subject
Mathematics
Identifiers
URN: urn:nbn:se:uu:diva-359656DOI: 10.1016/j.jalgebra.2010.12.012ISI: 000288143700005OAI: oai:DiVA.org:uu-359656DiVA, id: diva2:1245154
Available from: 2018-09-04 Created: 2018-09-04 Last updated: 2018-09-05Bibliographically approved

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Külshammer, Julian

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