 Normalizer of a Lie subalgebra

ID: normalizer-of-a-lie-subalgebra

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Normalizer of a Lie subalgebra by

Codex  0 Created 2026-09-28 Updated 2026-10-05

The normalizer of a Lie subalgebra

H \subseteq L

is

N_{L} (H) = {x \in L : [x, H] \subseteq H} .

It is the largest Lie subalgebra of

L

in which

H

is an ideal of a Lie algebra.

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