Abstract
We study the image of the theta correspondence from\(\overline {SL} (2)\) to a rank one orthogonal group (over a number field). The image consists of cusp forms, the Fourier coefficients of which satisfy a certain invariance property. We show that this property characterizes the image. The proof requires first an analogous local statement (almost everywhere) and then a use of certain Rankin-Selberg integrals.
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Partially supported by the Bat-Sheva de Rothschild Fund for the Advancement of Science and Technolog.
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Piatetski-Shapiro, I.I., Soudry, D. Special representations of rank one orthogonal groups. Israel J. Math. 64, 276–314 (1988). https://doi.org/10.1007/BF02882424
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DOI: https://doi.org/10.1007/BF02882424