Abstract
We develop some reduction techniques for the study of singularities in orbit closures of finite dimensional modules. This enables us to classify all singularities occurring in minimal degenerations of representations of Dynkin quivers. They are all smoothly equivalent to the singularity at the zero-matrix inside thep×q-matrices of rank at most one.
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Bongartz, K. Minimal singularities for representations of Dynkin quivers. Commentarii Mathematici Helvetici 69, 575–611 (1994). https://doi.org/10.1007/BF02564505
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DOI: https://doi.org/10.1007/BF02564505