Most people know about the numerical constant pi (or π, if you prefer). But did you know that pi has an evil twin represented by the symbol ϖ? As [John Carlos Baez] explains, it and its related ...
The celebration of March 14 began as a weird Bay Area tradition. By Soumya Karlamangla Children in math classes across America will soon be discussing the magic of a circle’s circumference and, ...
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