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What's driving coverage of pi right now?

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pi across IJR

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Overview

The number π is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.

From Wikipedia (CC BY-SA 4.0).

The number π is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.

Notable quotes

“There is a close and beautiful connection between the transformation theory for elliptic integrals and the very rapid approximation of pi. This connection was first made explicit by Ramanujan in his 1914 paper " Modular Equations and Approximations to π " ....”
— Jonathan M. Borwein, Peter B. Borwein, and David H. Bailey, "Ramanujan, modular equations, and approximations to pi or how to compute one billion digits of pi." The American Mathematical Monthly 96, no. 3 (1989): 201–219.
“We all know that π = 3.14159 and little kids can sometimes give it out to hundreds of decimal places. But the stock market is not like that. There's a range of reasonableness ...”
— Warren Buffett, (quote at 7:46 of 38:17)
“Something's going on. It has to do with that number. There's an answer in that number.”
— Maximillian Cohen, in π (1998), written by Darren Aronofsky, Sean Gullette, and Eric Watson