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The geometry of uniserial representations of algebras. II: Alternate viewpoints and uniqueness. (English) Zbl 0982.16010

Let \(\Gamma\) be a quiver, and let \(\Lambda=K\Gamma/I\), where \(I\) is an admissible ideal in the path algebra \(K\Gamma\), and \(K\) is an algebraically closed field. The aim of the authors is to prove the invariance up to birational equivalence of the uniserial varieties under a change of coordinatization of \(\Lambda\). They also prove that the natural maps from the uniserial varieties to the set of isomorphism types of uniserial \(\Lambda\)-modules have closed fibres [B. Huisgen-Zimmermann, Part I, J. Pure Appl. Algebra 127, No. 1, 39-72 (1998; Zbl 0951.16005)].

MSC:

16G10 Representations of associative Artinian rings
16G20 Representations of quivers and partially ordered sets
16G60 Representation type (finite, tame, wild, etc.) of associative algebras

Citations:

Zbl 0951.16005

References:

[1] Bongartz, K., On degenerations and extensions of finite dimensional modules, Adv. Math., 121, 245-287 (1996) · Zbl 0862.16007
[2] K. Bongartz, B. Huisgen-Zimmermann, Varieties of uniserial representations IV. Kinship to geometric quotients, Preprint.; K. Bongartz, B. Huisgen-Zimmermann, Varieties of uniserial representations IV. Kinship to geometric quotients, Preprint. · Zbl 1005.16012
[3] Huisgen-Zimmermann, B., The geometry of uniserial representations of finite dimensional algebras I, J. Pure Appl. Algebra, 127, 39-72 (1998) · Zbl 0951.16005
[4] Huisgen-Zimmermann, B., The geometry of uniserial representations of finite dimensional algebras. III: finite uniserial type, Trans. Amer. Math. Soc., 348, 4775-4812 (1996) · Zbl 0862.16008
[5] L. Le Bruyn, Optimal filtrations on representations of finite dimensional algebras, Trans. Amer. Math. Soc., (to appear); see http://win-www.uia.ac.be/u/lebruyn/PAPERS/optimalnew.dvi.; L. Le Bruyn, Optimal filtrations on representations of finite dimensional algebras, Trans. Amer. Math. Soc., (to appear); see http://win-www.uia.ac.be/u/lebruyn/PAPERS/optimalnew.dvi. · Zbl 0960.16014
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