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A 100-year-old pi trick might hint at deeper cosmic secrets
For more than a century, Srinivasa Ramanujan’s uncanny formulas for the number pi have looked like pure mathematical ...
Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...
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