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  • lehighuThis #PiDay Fun Fact comes to us from Professor Steven Weintraub in the Department of Mathematics...
    Pi appears in contexts that have nothing to do with circles. For example in a theorem proven by Swiss mathematician Leonhard Euler: The sum of 1/1 plus 1/4 plus 1/9 plus 1/16 plus 1/25 etc. - where the denominators are all perfect squares - is equal to Pi squared over 6.

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