Author:
(1) Yitang Zhang.
Appendix A. Some Euler products
Appendix B. Some arithmetic sums
Recall that Φ3 is given by (13.10). Write
For σ > 1 we can write
The following lemma will be proved in Appendix B.
Lemma 17.1. We have
Finally, from (17.1), (17.6) and (17.9) we conclude
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