Discrete Mean Estimates and the Landau-Siegel Zero: Evaluation of Ξ15

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Author:

(1) Yitang Zhang.

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Table of Links

Abstract & Introduction
Notation and outline of the proof
The set Ψ1
Zeros of L(s, ψ)L(s, χψ) in Ω
Some analytic lemmas
Approximate formula for L(s, ψ)
Mean value formula I
Evaluation of Ξ11
Evaluation of Ξ12
Proof of Proposition 2.4
Proof of Proposition 2.6
Evaluation of Ξ15
Approximation to Ξ14
Mean value formula II
Evaluation of Φ1
Evaluation of Φ2
Evaluation of Φ3
Proof of Proposition 2.5

Appendix A. Some Euler products

Appendix B. Some arithmetic sums

References

12. Evaluation of Ξ15


In a way similar to the proof of Lemma 8.4, by lemma 8.2 and 5.8, we find that the right side above is equal to


It follows by Cauchy’ integral formula that


Gathering these results together we obtain (12.10). The proof of (12.11) is similar to that of.


Proof. The left side is equal to


Assume |w| = α. In a way similar to the proof of Lemma 12.1, we deduce that


By direct calculation,


and the derivative of


at w = 0 is equal to


This can be written as the form


Since


it follows by simple calculation that


We have

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This paper is available on arxiv under CC 4.0 license.

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