Classes of unitarizable derived functor modules

Enright, Thomas J. ; Parthasarathy, Rajagopalan ; Wallach, Nolan R. ; Wolf, Joseph A. (1983) Classes of unitarizable derived functor modules PNAS, 80 (22). pp. 7045-7050. ISSN 0027-8424

PDF - Publisher Version

Official URL:


For a real semisimple Lie group G, the description of the unitary dual remains an elusive question. One of the difficulties has been the lack of technique for constructing unitary representations. Unitary induction from parabolic subgroups of G yields unitary representations by the very definition of these representations. However, not all unitary irreducible representations of G are obtained by this type of induction. In addition, we need derived functor parabolic induction [ef. Vogan, D. (1981) Representations of Real Reductive Lie Groups (Birkhäuser, Boston)] to describe all irreducible representations of G. For this second type of induction, the obvious analogues from parabolic subgroup induction regarding unitarity are false. In this announcement, we describe a setting where derived functor parabolic induction yields unitary representations of G. These results include proofs of unitarity for some of the representations conjectured to be unitary by Vogan and Zuckerman [(1983) Invent. Math. , in press] and also proofs of unitarity for some which lie outside the domain described in those conjectures.

Item Type:Article
Source:Copyright of this article belongs to National Academy of Sciences.
ID Code:33904
Deposited On:21 Mar 2011 09:46
Last Modified:17 May 2016 16:47

Repository Staff Only: item control page