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Mathematicians have long pondered the reach of a grazing goat tied to a fence, only finding approximate answers until now.
For almost a century, the anonymous members of Nicolas Bourbaki have written books intended as pure expressions of mathematical thought.
Renormalization has become perhaps the single most important advance in theoretical physics in 50 years.
For millennia, mathematicians have wondered whether odd perfect numbers exist, establishing an extraordinary list of restrictions for the hypothetical objects in the process. Insight on this question could come from studying the next best things.