Abstract
In modern number theory there are famous theorems on the modularity of Dirichlet series attached to geometric or arithmetic objects. There is Hecke’s converse theorem, Wiles proof of the Taniyama-Shimura conjecture, and Fermat’s Last Theorem to name a few. In this article in the spirit of the Langlands philosophy we raise the question on the modularity of the GL2-twisted spinor L-function Z G ⊗ h (s) related to automorphic forms G,h on the symplectic group GSp2 and GL2. This leads to several promising results and finally culminates into a precise very general conjecture. This gives new insights into the Miyawaki conjecture on spinor L-functions of modular forms. We indicate how this topic is related to Ramakrishnan’s work on the modularity of the Rankin-Selberg L-series.
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Communicated by U. Kühn.
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Heim, B. On the modularity of the GL2-twisted spinor L-function. Abh. Math. Semin. Univ. Hambg. 80, 71–86 (2010). https://doi.org/10.1007/s12188-009-0028-x
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DOI: https://doi.org/10.1007/s12188-009-0028-x