Complex sentence: In mathematics, the Bianchi classification, named for Luigi Bianchi, is a classification of the 3-dimensional real Lie algebras into 11 classes, 9 of which are single groups and two of which have a continuum of isomorphism classes.
Split into simpler sentences: In mathematics, the Bianchi classification, named for Luigi Bianchi, is a classification of Lie algebras. For 3-dimensional real Lie algebras into 11 classes, 9 of which are single groups and two of which have a continuum of isomorphism classes.