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Oct 7, 2011 at 3:28 comment added Stopple @Peter: Thanks, I have the Borwein paper but forgot about it. Their result would then give 'no exceptional zero for $d<1.5\times 10^{12}$'. But still one could expect better results for $k>0$. Still no word from the authors, but then, I often ignore email about the exercises in my own book.
Oct 7, 2011 at 1:15 comment added Peter Humphries Also Borwein et al.'s paper "Sign changes in the sums of the Liouville function" (cecm.sfu.ca/personal/pborwein/PAPERS/P208.pdf) finds the first counterexample to Turan's conjecture.
Oct 7, 2011 at 1:12 comment added Peter Humphries Interesting. Are you still yet to hear anything from the authors? It is, of course, entirely possible that they're mistaken.
Oct 6, 2011 at 19:35 history answered Stopple CC BY-SA 3.0