Author:
(1) Yitang Zhang.
Appendix A. Some Euler products
Appendix B. Some arithmetic sums
Recall that we always assume ψ is a primitive character (mod p), p ∼ P. Sometimes we write pψ for the modulus p.
Let k ∗ = {κ ∗ (m)} and a ∗ = {a ∗ (n)} denote sequences of complex numbers satisfying
The goal of this section is to prove
Proposition 14.1. Suppose |β| < 5α. Then
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