S-expansions of three-dimensional Lie algebras
classification
🧮 math-ph
math.MPmath.RA
keywords
algebrass-expansionsthree-dimensionalalgebraallowsconsidereddefinedimension
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S-expansions of three-dimensional real Lie algebras are considered. It is shown that the expansion operation allows one to obtain a non-unimodular Lie algebra from a unimodular one. Nevertheless S-expansions define no ordering on the variety of Lie algebras of a fixed dimension.
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