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Pi

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This page will discuss Pi.

Stephensonia

Letter-Pi-Serif.png
The minuscule,
or lower-case, pi Enoch Root found π to be entertainment. I've always used 22/7 as the way to describe Pi.

Authored entries

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Excerpt of Wikipedia: π

The mathematical constant π (written as "pi" when the Greek letter is not available) is ubiquitous in mathematics and physics. In Euclidean plane geometry, π may be defined as either the ratio of a circle's circumference to its diameter, or as the area of a circle of radius 1 (the unit circle). Most modern textbooks define π analytically using trigonometric functions, e.g. as the smallest positive x for which sin(x) = 0, or as twice the smallest positive x for which cos(x) = 0. All these definitions are equivalent.

Pi is also known as Archimedes' constant (not to be confused with Archimedes' number) and Ludolph's number.

The numerical value of π approximated to 64 decimal places (sequence A000796 in OEIS) is: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 5923

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