Norms on enveloping algebras

Norms on enveloping algebras
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by Denis Luminet PDF

Proc. Amer. Math. Soc. 101 (1987), 65-66 Request permission

Let $\mathfrak {g}$ be a complex Lie algebra, and let $U$ be its enveloping algebra. $U$ is normable if and only if $\mathfrak {g}$ is nilpotent.

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