On the analytic properties of intertwining operators I‎: ‎global normalizing factors

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Abstract:

‎We provide a uniform estimate for the $L^1$-norm (over any interval of bounded length) of the logarithmic derivatives‎ ‎of global normalizing factors associated to intertwining operators for the following reductive groups over number fields‎: ‎inner forms of $operatorname{GL}(n)$; quasi-split classical groups and their similitude groups; the exceptional group $G_2$‎. ‎This estimate is a key ingredient in the analysis of the spectral side of Arthur's trace formula‎. ‎In particular‎, ‎it is applicable to the limit multiplicity problem studied by the authors in earlier papers‎.

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Journal title

volume 43  issue Issue 4 (Special Issue)

pages  235- 277

publication date 2017-08-30

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