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A note on the degree conjecture for the Selberg class
Authors:Jerzy Kaczorowski  Alberto Perelli
Institution:(1) Faculty of Mathematics and Computer Science, A. Mickiewicz University, 61-614 Poznań, Poland;(2) Dipartimento di Matematica, Università di Genova, via Dodecaneso 35, 16146 Genova, Italy
Abstract:The degree conjecture for the Selberg class MediaObjects/12215_2008_33_Fig1_HTML.gif of L-functions states that the degree d F of every FMediaObjects/12215_2008_33_Fig2_HTML.gif is an integer. Moreover, it is expected that every FMediaObjects/12215_2008_33_Fig3_HTML.gif has polynomial Euler product, and that the degree ∂ F of such an Euler product coincides with d F . In this note we prove that a suitable continuity assumption on the degree d F implies that ∂ F = d F for all FMediaObjects/12215_2008_33_Fig4_HTML.gif with polynomial Euler product.
Keywords:L-functions  Selberg class  degree conjecture  polynomial Euler products
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