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Harish-Chandra homomorphism : ウィキペディア英語版 | Harish-Chandra homomorphism
In mathematical representation theory, a Harish-Chandra homomorphism is a homomorphism from a subalgebra of the universal enveloping algebra of a semisimple Lie algebra to the universal enveloping algebra of a subalgebra. A particularly important special case is the Harish-Chandra isomorphism identifying the center of the universal enveloping algebra with the invariant polynomials on a Cartan subalgebra. In the case of the ''K''-invariant elements of the universal enveloping algebra for a maximal compact subgroup ''K'', the Harish-Chandra homomorphism was studied by . ==References==
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