Singular Unitary Representations and Discrete Series for Indefinite Stiefel Manifolds $U(p,q;{\mathbb F})/U(p-m,q;{\mathbb F})$

Toshiyuki Kobayashi

1992년 1월 · American Mathematical Soc.

eBook

106

페이지

검증되지 않은 평점과 리뷰입니다. 자세히 알아보기

eBook 정보

Interesting classes of (g, K)-modules are often described naturally in terms of cohomologically induced representations in various settings, such as unitary highest weight modules, the theory of dual reductive pairs, discrete series for semisimple theory of dual reductive pairs, discrete series for semisimple symmetric spaces, etc. These have been stimulating the study of algebraic properties of derived functor modules. Now an almost satisfactory theory on derived functor modules, including a functorial property about unitarizability, has been developed in the good range of parameters, though some subtle problems still remain. This work treats a relatively singular part of the unitary dual of pseudo-orthogonal groups U(p, q;F) over F = R, C and H. These representations arise from discrete series for indefinite Stiefel manifolds U(p, q;F)/U(p - m, q, F)(2m 4p). Thanks to the duality theorem between d-module construction and Zuckerman's derived functor modules (ZDF-modules), these discrete series are naturally described in terms of ZF-modules with possibly singular parameters. The author's approach is algebraic and covers some parameters wandering outside the canonical Weyl cha