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math.RA2001
Contractions and generalized Casimir invariants
Rutwig Campoamor-Stursberg
We prove that if is a contraction of a Lie algebra then the number of functionally independent invariants of is at least that of…
math.RA2001
Simple completable contractions of nilpotent Lie algebras
Rutwig Campoamor-Stursberg
We study a certain class of non-maximal rank contractions of the nilpotent Lie algebra and show that these contractions are completable Lie algebras. As a consequenc…