dedicated to the memory of Elwyn Berlekamp The mistaken formula (x+y)2 = x2 + y2 is sometimes called the First Year Student’s Dream, but I think that’s a bad name for three reasons. Fir…

James Propp
38d ago

Ever wanted (x+y)^2 to equal x^2 + y^2? There's a math for that. See my newest Mathematical Enchantments piece, "When 1+1 Equals 0." mathenchant.wordpress.com/2020/10/17/whe… pic.twitter.com/VPs60mTwiX

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