Lie subalgebra
= Lie subalgebra
{wiki=Lie_algebra#Homomorphisms,_subalgebras_and_ideals}
A Lie subalgebra is a <vector subspace> closed under the <Lie bracket>.
= Lie subalgebra
{wiki=Lie_algebra#Homomorphisms,_subalgebras_and_ideals}
A Lie subalgebra is a <vector subspace> closed under the <Lie bracket>.