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math.RT2014★ 1 cited
A direct approach to the rational normal form
Klaus Bongartz
We give a short constructive proof for the existence and uniqueness of the rational normal form of a quadratic matrix.
math.RT2014
Varieties of uniserial representations IV. Kinship to geometric quotients
Klaus Bongartz, Birge Huisgen-Zimmermann
Let be a finite dimensional algebra over an algebraically closed field, and a finite sequence of simple left -modules. In [6, 9], quasiprojective algebraic variet…
math.RT2014
The geometry of uniserial representations of algebras II. Alternate viewpoints and uniqueness
Klaus Bongartz, Birge Huisgen-Zimmermann
We provide two alternate settings for a family of varieties modeling the uniserial representations with fixed sequence of composition factors over a finite dimensional algebra. The…