I apologize for burdening MO with such a vapid, nonresearch question, but I have been curious ever since Suvrit's popular October 2010 <a href="https://mathoverflow.net/questions/44326/">_Most memorable titles_ MO question</a> if there were any "$E=mc^2$-titles", as I think of them—how Einstein in retrospect might have entitled his 1905 paper (instead of "Zur Elektrodynamik bewegter Körper"!)—paper/book titles composed entirely of math symbols. There are two close misses in the responses to that MO question: Connes et al.'s <a href="http://arxiv.org/abs/0806.2401">"Fun with $\mathbb{F}_{1}$"</a>, and Taubes's <a href="http://projecteuclid.org/DPubS?service=UI&version=1.0&verb=Display&handle=euclid.jdg/1214425348">"${\rm GR}={\rm SW}$: Counting curves and connections."</a> The only title entirely composed of math symbols with which I'm familiar is the delightful book _<a href="http://www.math.upenn.edu/~wilf/AeqB.html">A=B</a>_, by Marko Petkovsek, Herbert Wilf, and Doron Zeilberger. Can you identify others? Please interpret this question in a weekend-recreational spirit! :-)