Kostant's convexity theorem

id: kostant-s-convexity-theorem-202-16696433
title: Kostant's convexity theorem
text: In mathematics, Kostant's convexity theorem, introduced by Bertram Kostant (1973), states that the projection of every coadjoint orbit of a connected compact Lie group into the dual of a Cartan subalgebra is a convex set. It is a special case of a more general result for symmetric spaces. Kostant's theorem is a generalization of a result of Schur (1923), Horn (1954) and Thompson (1972) for hermitian matrices. They proved that the projection onto the diagonal matrices of the space of all n by n c
brand slug: wiki
category slug: encyclopedia
description: Theorem about projections of coadjoint orbits of a connected compact Lie group
original url: https://en.wikipedia.org/wiki/Kostant%27s_convexity_theorem
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date modified: 2020-05-10T15:07:24Z
main entity: {"identifier":"Q6433477","url":"https://www.wikidata.org/entity/Q6433477"}
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