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Degenerate principal series and compact groups. (English) Zbl 0687.22003
Suppose G is one of the three groups SU(n,n), Sp(n,n) or $$Spin_ 0(n,n)$$. Fix K, a maximal compact subgroup of G, and choose P to be the maximal parabolic subgroup of G such that G/P is a K-symmetric space. In this paper, we solve the problems of obtaining the complete reducibility and the unitarizability of degenerate principal series representations of G induced from representations of P that are trivial on both $$K\cap P_ 0$$ and the unipotent radical of P.
Reviewer: K.D.Johnson

##### MSC:
 22E46 Semisimple Lie groups and their representations 22C05 Compact groups
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##### References:
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