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This month features a memorial for the remarkable mathematician Peter Hilton, who worked with Alan Turing at Bletchley Park. It also has an enticing article about automorphic forms and Eisenstein series. Finally, there is a treatment of the combinatorial revolution in knot theory. And our *Doceamus* column discusses the elusive but important topic of mathematical maturity. --Steven G. Krantz, Editor
(pp. )

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### Jean Pedersen, Coordinating Editor

(pp. 1538)

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### Sam Nelson

(pp. 1553)

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### Benjamin Brubaker, Daniel Bump, and Solomon Friedberg

(pp. 1563)

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