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Extension-orthogonal components of nilpotent varieties
Christof Geiß, Jan Schröer
Let Q be a Dynkin quiver, and let P(Q) be the corresponding preprojective algebra. Let I be a set of pairwise different indecomposable irreducible components of varieties of P(Q)-m…
math.RT2002
Stable endomorphism algebras of modules over special biserial algebras
Jan Schröer, Alexander Zimmermann
We prove that the stable endomorphism algebra of a module without self-extensions over a special biserial algebra is a gentle algebra. In particular, it is again special biserial.…