出典:Wikipedia
出典:『Wikipedia』 (2011/03/22 10:43 UTC 版)
In the mathematical field of Lie theory, a split Lie algebra is a pair
where
is a Lie algebra and
is a splitting Cartan subalgebra, where "splitting" means that for all
is triangularizable. If a Lie algebra admits a splitting, it is called a splittable Lie algebra. Note that for reductive Lie algebras, the Cartan subalgebra is required to contain the center.