The braid group action on the set of exceptional sequences of a hereditary artin algebra
Ringel, Claus Michael ; Göbel, Rüdiger (Hrsg.)In: Abelian group theory and related topics: Conference on Abelian Groups, August 1 - 7, 1993, Oberwolfach, Germany, Jg. 171, S. 339-3521994Algebras whose Auslander-Reiten quivers have large regular components
Crawley-Boevey, William ; Ringel, Claus MichaelIn: Journal of Algebra, Jg. 153 H. 2, S. 494-5161992A bypass of an arrow is sectional
Crawley-Boevey, William ; Happel, Dieter ; Ringel, Claus MichaelIn: Archiv der Mathematik, Jg. 58 H. 6, S. 525-5281992The category of modules with good filtrations over a quasi-heriditary algebra has almost split sequences
Ringel, Claus MichaelIn: Mathematische Zeitschrift, Jg. 208 H. 1, S. 209-2231991The composition algebra of a cyclic quiver
Ringel, Claus MichaelIn: Proceedings of the London Mathematical Society : Ser. 3, Jg. 66, S. 507-5371993Directing projective modules
Happel, Dieter ; Ringel, Claus MichaelIn: Archiv der Mathematik, Jg. 60 H. 3, S. 237-2461993Lie algebras (arising in representation theory)
Ringel, Claus Michael ; Tachikawa, H. (Hrsg.) ; Brenner, S. (Hrsg.)In: Representations of Algebras and Related Topics, Jg. 168, S. 284-2911992The module theoretical approach to quasi-hereditary algebras
Dlab, Vlastimil ; Ringel, Claus Michael ; Tachikawa, H. (Hrsg.) ; Brenner, S. (Hrsg.)In: Representations of Algebras and Related Topics, Jg. 168, S. 200-2241992From representations of quivers via Hall and Loewy algebras to quantum groups
Ringel, Claus Michael ; Bokut, Leonid A. (Hrsg.)In: Proceedings of the International Conference on Algebra Dedicated to the Memory of A. I. Malcev ; 2: Mezdunarodnaja Konferencija po Algebre,1, 1989, Novosibirsk, Jg. 131, S. 381-4011992Recent advances in the representation theory of finite dimensional algebras
Ringel, Claus Michael ; Michler, Gerhard O. (Hrsg.) ; Ringel, Claus Michael (Hrsg.)In: Representation theory of finite groups and finite-dimensional algebras: proceedings of the conference at the University of Bielefeld from May 15-17, 1991, and 7 survey articles on topics of representation theory, Jg. 95, S. 141-1921991The spectral radius of the Coxeter transformations for a generalized Cartan matrix
Ringel, Claus MichaelIn: Mathematische Annalen, Jg. 300 H. 1, S. 331-3391994Towers of Semi-simple algebras
Dlab, Vlastimil ; Ringel, Claus MichaelIn: Journal of functional analysis, Jg. 102 H. 1, S. 35-461991G. Lusztig: Introduction to Quantum Groups [Book review]
Ringel, Claus MichaelIn: Zeitschrift für Analysis und ihre Anwendungen, Jg. 13, S. 756-7601994