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A multiple sum involving the Moebius function

Yoichi Motohashi

math.NTarXiv:math/0310064

Abstract

We consider a multiple arithmetical sum involving the Moebius function which despite its elementary appearance is in fact of a highly intriguing nature. We establish an asymptotic formula for the quadruple case that raises the first genuinely non-trivial situation. This is a rework of an old unpublished note of ours.

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