Lie algebras

Dixmier mapping

In mathematics, the Dixmier mapping describes the space Prim(U(g)) of primitive ideals of the universal enveloping algebra U(g) of a finite-dimensional solvable Lie algebra g over an algebraically closed field of characteristic 0 in terms of coadjoint orbits. More precisely, it is a homeomorphism from the space of orbits g*/G of the dual g* of g (with the Zariski topology) under the action of the adjoint group G to Prim(U(g)) (with the Jacobson topology). The Dixmier map is closely related to the orbit method, which relates the irreducible representations of a nilpotent Lie group to its coadjoint orbits. Dixmier introduced the Dixmier map for nilpotent Lie algebras and then in (Dixmier ) extended it to solvable ones., chapter 6) describes the Dixmier mapping in detail. (Wikipedia).

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Related pages

Nilpotent Lie algebra | Algebraically closed field | Universal enveloping algebra | Zariski topology | Orbit method | Primitive ideal | Solvable Lie algebra