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What is [math]\pi[/math]? (and while we're at it, what's [math]e[/math]?)

Wait, what? What do you mean, "what is [math]\pi[/math]"? It's the ratio of the circumference of a circle to its diameter. Or it's the area of a circle of radius 1, or something like that. Ever...

(more)Alon Amit,

Updated Jan 14 · Upvoted by Tom Davis, PhD in mathematics from Stanford University. and Yair Livne, B.Sc. and M.Sc. in Mathematics