Denominator identities for finite-dimensional Lie superalgebras and Howe duality for compact dual pairs

Details Denominator identities for finite-dimensional Lie superalgebras and Howe duality for compact dual pairs Denominator identities for finite-dimensional Lie superalgebras and Howe duality for compact dual pairs

2011-02-18

arxiv.org/abs/1102.3785v3

Mathematics

Representation Theory

Latex, 75 pages. Minor corrections. Final version, to appear in the Japanese Journal of Mathematics

Scientific paper

We provide formulas for the denominator and superdenominator of a basic classical type Lie superalgebra for any set of positive roots. We establish a connection between certain sets of positive roots and the theory of reductive dual pairs of real Lie groups. As an application of our formulas, we recover the Theta correspondence for compact dual pairs. Along the way we give an explicit description of the real forms of basic classical type Lie superalgebras.

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