Why do eight perfect card shuffles leave a standard deck of cards unchanged? Are there really “six degrees of separation” between all pairs of people? How can any map need only four colors to ensure that no regions of the same color touch? Marc Chamberland, Myra Steele Professor of Natural Science and Mathematics, focuses on a different small number in each chapter. He explores number theory, geometry, chaos theory, numerical analysis, and mathematical physics. Published by Princeton University Press, July 2015.
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