## Update

July 21, 2011 by Qiaochu Yuan

I put up a post over at the StackOverflow blog describing a little of what I’ve been up to this summer.

Curiously enough, the Zipf distribution which shows up in that post is the same as the zeta distribution that shows up when trying to motivate the definition of the Riemann zeta function. I’m sure there is a conceptual explanation of this connection somewhere, probably coming from statistical mechanics, but I don’t know it. I suppose the approximate scale invariance of the zeta distribution is relevant to its appearance in many real-life statistics, as described in Terence Tao’s blog post on the subject here.

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on July 22, 2011 at 6:44 am |FernandoNice post! Maybe you should try Detrended Fluctuation Analysis (DFA) on the series of intervals between posts. DFA is an easy way to check whether a series is correlated or even if it has long-time correlations (a common feature in scale-invariant systems).