Abstract
In this paper, we give a proof of the Gan-Gross-Prasad conjecture for the discrete series of U(p,q). Given a discrete series representation D(λ) in terms of the Harish-Chandra parameter, the restriction of D(λ) to U(p-1,q) contains D(μ) as a subrepresentation if and only if λ and μ interlaces in a very special way.
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URL
https://arxiv.org/abs/1508.02032