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Come, let us enter the realm of the madman and the finely wrought threads of...

It was Sunday, July 27, 1890. Vincent had recently finished Wheatfield with Crows, thought to be his final painting, one that he described as representing “vast fields of wheat beneath troubled skies,” one where he said in a letter he meant to send to Theo “I did not need to go out of my way to try to express cheerlessness and extreme loneliness.” The letter never got sent, but was found stuffed in his smock.

That morning, as usual, he walked out into the wheat fields with his easel, brushes, tubes of color and folding...

Mathematical play has challenged and stimulated human ingenuity throughout recorded history. It has ranged from the common sorts of brain teasers such as mazes, arithmetic story problems, and simple geometric puzzles to sophisticated explorations of questions that still concern modern mathematical theorists. This new dictionary provides a tantalizing variety of paradoxes, games, problems, and puzzles that will appeal to mathematics enthusiasts at every level of proficiency. Eiss introduces his subject with an overview of the history of recreational mathematics and its relation to some...