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  Mathematics A Truncated Manuscript [long_description] In the mid-1980s, an enigmatic document began circulating in French mathematical circles. Entitled Récoltes et Semailles, it was a lengthy, philosophical and deeply personal tract from the elusive mathematician Alexander Grothendieck, by then living in self-imposed seclusion. Now published officially for the first time, Pierre Schapira casts a critical eye over the book and some notable omissions.

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  Mathematics Categories: From Zero to Infinity [long_description] Set theory, category theory, and topology. Pierre Schapira explores the concept of identity within category theory, and what it means for the properties to be satisfied only up to homotopy.

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