Showing papers by "Henryk Iwaniec published in 2015"
TL;DR: In this paper, the coprimality of two variables turns out to be incorrect, and the results remain unchanged, except for a few modifications in the proofs, and they make the following changes: on page 723, line 2, replace 22h+3 f by 22h + 3 f D, whereD is the different.
Abstract: A certain argument concerning the coprimality of two variables turns out to be incorrect. We are grateful to Ruofan Wang for finding this error. On page 728 we claimed that q and m can be taken to be coprime. This is not always true but actually, in the application, we needed only that q does not divide m. As a consequence, all of the results remain unchanged, except for a few modifications in the proofs. We make the following changes. 1. On page 723, line 2, replace 22h+3 f by 22h+3 f D, whereD is the different.
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