October 24, 2004 5:16 pmArticlesStrictly For The Math Crowdby John DerbyshireShare this storyShare on FacebookShare on XShare on LinkedInMore sharing optionsListen to articleText sizeGiftPDFcommentsQ—What’s purple and commutes?A—An Abelian grape.About the AuthorJohn DerbyshireMr. Derbyshire is a former contributing editor of National Review.CommentsAdvertisementAdvertisementAdvertisementAdvertisement
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