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manuscripta mathematica

, Volume 102, Issue 2, pp 169–176 | Cite as

Decompositions of degenerations

  • Robert Aehle
  • 23 Downloads

Abstract:

We develop a method to refine a given degeneration of modules. This enables us to give a new proof of the equivalence of the partial orders ≤deg and ≤ext in the case that the algebra Λ has a directed Auslander–Reiten quiver.

Mathematics Subject Classification (1991):16G10, 14L30 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Robert Aehle
    • 1
  1. 1.Mathematisches Institut, Universität Bern, Sidlerstrasse 5, 3012 Bern, Switzerland. e-mail: aehle@math-stat.unibe.chCH

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