Invariant Measures for Unitary Groups Associated to KAC-Moody LIE Algebras

Author/creator Pickrell, Doug, 1952- Author
Format Electronic
Publication InfoProvidence : American Mathematical Society
Description125 p.
Supplemental ContentFull text available from Memoirs of the American Mathematical Society - Backfile
Supplemental ContentFull text available from Ebook Central - Academic Complete
Subjects

SeriesMemoirs of the American Mathematical Society Ser. 146
Summary Annotation The main purpose of this paper is to prove the existence, and in some cases the uniqueness, of unitarily invariant measures on formal completions of groups associated to affine Kac-Moody algebras, and associated homogeneous spaces. The basic invariant measure is a natural generalization of Haar measure for a simply connected compact Lie group, and its projection to flag spaces is a generalization of the normalized invariant volume element. The other "invariant measures" are actually measures having values in line bundles over these spaces; these bundle-valued measures heuristically arise from coupling the basic invariant measure to Hermitian structures on associated line bundles, but in this infinite dimensional setting they are generally singular with respect to the basic invariant measure.
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Technical detailsMode of access: World Wide Web
Genre/formElectronic books.
LCCN 00036256
ISBN9780821820681
ISBN0821820680 (Trade Paper) Active Record
Standard identifier# 9780821820681
Stock number00001436

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