Discrete Mean Estimates and the Landau-Siegel Zero: Proof of Proposition 2.4

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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

10. Proof of Proposition 2.4

The goal of this section is to prove Proposition 2.4. We continue to assume 1 ≤ j ≤ 3.


By Lemma 8.1 we have


The contour of integration is moved in the same way as the proof of Lemma 8.1. Thus, by Lemma 5.8 and 8.2,


This yields (10.8) since the function


Thus, with simple modification, Lemma 10.1 and 10.2 apply to the sums


Noting that


and gathering the above results together we conclude


with


Hence, by Proposition 7.1,

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This paper is available on arxiv under CC 4.0 license.

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