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Our May issue features articles that reflect the diversity and richness of mathematics. There is a piece on financial charlatanism (one of the first *Notices* articles on the mathematics of finance), one on the perils and pulchritude of big data, and an exploration (from the educational point of view) of the difference between hedgehogs and foxes. Finally we have a memorial article for the distinguished mathematician Hans Grauert. --Steven G. Krantz, Editor
(pp. )

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### David H. Bailey, Jonathan M. Borwein, Marcos Lopez de Prado, and Qiji Jim Zhu

(pp. 458)

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### Alan Huckleberry, Thomas Peternell, Yum-Tong Siu, Takeo Ohsawa, Jean-Pierre Demailly, Daniel Barlet, Gunther Trautmann, and Ingo Lieb

(pp. 472)

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### Domenico Napoletani, Marco Panza, and Daniele C. Strupppa

(pp. 485)

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