关于伴随轨道空间和余伴随轨道空间是辛同构的情形
On the case where Adjoint and Coadjoint Orbit Spaces are Symplectomorphic
摘要:
设G是一个作用在G的李代数g及其对偶g* 上的n维半单紧连通李群.我们证明了G的非退化Killing形式诱导G到G上的Ad*-等变同构,而这又通过传递到子空间诱导G的伴随轨道空间和余伴随轨道空间之间的辛同构。
英文摘要:
Let G be an n-dimensional semisimple compact and connected Lie group acting on both the Lie algebra g of G and its dual g*. We show that a nondegenerate Killing form of G induces an Ad*-equivariant isomorphism of g onto g* which, in turn, induces by passage to quotients a symplectomorphism between adjoint and coadjoint orbit spaces of G.
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