
For each $n\ge2$ we classify all $n$-dimensional algebras over an arbitrary infinite field which have the property that the $n$-dimensional abelian Lie algebra is their only proper degeneration.
We now complete the classification of all 'level one' algebras over an arbitrary field. Some new references have been added
linear action, Rings and Algebras (math.RA), QA1-939, FOS: Mathematics, degeneration, orbit closure, Mathematics - Rings and Algebras, algebra, Mathematics
linear action, Rings and Algebras (math.RA), QA1-939, FOS: Mathematics, degeneration, orbit closure, Mathematics - Rings and Algebras, algebra, Mathematics
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