Operatorenkalkül über freien Monoiden II: Binominalsysteme.
P. Kirschenhofer, G. Baron (1981)
Monatshefte für Mathematik
P. Kirschenhofer, G. Baron (1981)
Monatshefte für Mathematik
Budimirović, Vjekoslav, Šešelja, Branimir (2002)
Novi Sad Journal of Mathematics
Petter Andreas Bergh (2009)
Colloquium Mathematicae
Given an object in a category, we study its orbit algebra with respect to an endofunctor. We show that if the object is periodic, then its orbit algebra modulo nilpotence is a polynomial ring in one variable. This specializes to a result on Ext-algebras of periodic modules over Gorenstein algebras. We also obtain a criterion for an algebra to be of wild representation type.
Zygmunt Pogorzały (2014)
Open Mathematics
In this note we show that there are a lot of orbit algebras that are invariant under stable equivalences of Morita type between self-injective algebras. There are also indicated some links between Auslander-Reiten periodicity of bimodules and noetherianity of their orbit algebras.
Walter D. Burgess, Robert M. Raphael (1981)
Czechoslovak Mathematical Journal
Melvin Henriksen, Frank A. Smith (1990)
Commentationes Mathematicae Universitatis Carolinae
Gábor Révész (1983)
Manuscripta mathematica
David A. jr. Vogan (1980)
Mathematische Annalen
Ismail Idris (2000)
Colloquium Mathematicae
The notions of a preordering and an ordering of a ring R with involution are investigated. An algebraic condition for the existence of an ordering of R is given. Also, a condition for enlarging an ordering of R to an overring is given. As for the case of a field, any preordering of R can be extended to some ordering. Finally, we investigate the class of archimedean ordered rings with involution.
T.C. Craven (1991)
Semigroup forum
Marleen Denert (1989)
Mathematica Scandinavica
H. Hijikata, A. Pizer, T. Shemanske (1989)
Journal für die reine und angewandte Mathematik
Klaus W. Roggenkamp (1978)
Mathematische Zeitschrift
Sobhy Ghoneim, Marian Kechlibar, Tomáš Kepka (2005)
Commentationes Mathematicae Universitatis Carolinae
Left selfdistributive rings (i.e., ) which are semidirect sums of boolean rings and rings nilpotent of index at most 3 are studied.
Otto Körner (1982)
Journal für die reine und angewandte Mathematik
Martine Picavet-L'hermitte (1987)
Annales scientifiques de l'Université de Clermont. Mathématiques
Bhat, V.K. (2009)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
Kenneth A. Brown (1984)
Compositio Mathematica
Francis Pastijn (1975/1976)
Groupe d'étude d'algèbre Groupe d'étude d'algèbre