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math.RT2009
On minimal disjoint degenerations of modules over tame path algebras
Klaus Bongartz, Guido Frank, Isabel Wolters
We study minimal disjoint degenerations for representations of tame quivers. In particular, we prove that their codimensions are bounded by 2. Therefore a quiver is Dynkin resp. Eu…
math.RT2009
Indecomposables live in all smaller lengths
Klaus Bongartz
Let k be an algebraically closed field and A a finite dimensional associative k-algebra. We prove that there is no gap in the lengths of indecomposable A-modules of finite length.…