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A note on exceptional characters and non-vanishing of Dirichlet L-functions




TekijätCech Martin, Matomäki Kaisa

KustantajaSPRINGER HEIDELBERG

Julkaisuvuosi2023

JournalMathematische Annalen

Tietokannassa oleva lehden nimiMATHEMATISCHE ANNALEN

Lehden akronyymiMATH ANN

Sivujen määrä10

ISSN0025-5831

eISSN1432-1807

DOIhttps://doi.org/10.1007/s00208-023-02667-x

Verkko-osoitehttps://link.springer.com/article/10.1007/s00208-023-02667-x

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/180427980


Tiivistelmä

We study non-vanishing of Dirichlet L-functions at the central point under the unlikely assumption that there exists an exceptional Dirichlet character. In particular we prove that if ψ is a real primitive character modulo D ∈ N with L(1,ψ) ≪ (log D)−25−ε, then, for any prime q ∈ [D300, DO(1)], one has L(1/2, χ) ≠ 0 for almost all Dirichlet characters χ (mod q).


Ladattava julkaisu

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Last updated on 2024-26-11 at 14:58