Global Analysis by Hidden Symmetry
Global Analysis by Hidden Symmetry
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DOI:
10.1007/978-3-319-59728-7_13
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发表时间:
2016-08
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通讯作者:
Toshiyuki Kobayashi
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文献类型:
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作者:
Toshiyuki Kobayashi
Hidden symmetry of aG′-spaceXis defined by an extension of theG′-action onXto that of a groupGcontainingG′ as a subgroup. In this setting, we study the relationship between the three objects:(A)global analysis onXby using representations ofG(hidden symmetry);(B)global analysis onXby using representations ofG′;(C)branching laws of representations ofGwhen restricted to the subgroupG′.We explain a trick which transfers results for finite-dimensional representations in the compact setting to those for infinite-dimensional representations in the noncompact setting whenis-spherical. Applications to branching problems of unitary representations, and to spectral analysis on pseudo-Riemannian locally symmetric spaces are also discussed.