Pi
Number, approximately 3.14
Summary
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.
Originally created by 165.123.179.xxx
11/11/2001, 9:01:15 PM
Modified
5/27/2026, 6:08:52 PM
Recent revisions
Prevent overflow: use [[Template:overflow|overflow]] and [[Template:sticky table start|sticky table]] templates
/* History */ Let's keep the Machin-like formula paragraph somewhat consolidated. It does not have to be in strict chronological order. This is not a timeline.
/* Infinite series */ Reorganized some sentences to be in historical order
Minor change
/* Irrationality and normality */ state unsolved problem as a question
/* Geometry and trigonometry */ formatting fix
/* Geometry and trigonometry */ formatting fix
/* Geometry and trigonometry */ formatting fix
/* Monte Carlo methods */ formatting fix
/* Computer era and iterative algorithms */ formatting fixes
/* Transcendence */ formatting fix
formatting fix
formatting fix
formatting fix
link author: J. W. S. Cassels (via [[WP:JWB]])
link author: Shoshichi Kobayashi (via [[WP:JWB]])
link (via [[WP:JWB]])
Undid revision [[Special:Diff/1348741279|1348741279]] by [[Special:Contributions/Chbarts|Chbarts]] ([[User talk:Chbarts|talk]]) neither is correct or incorrect, but the default should be animated
Correctly default to static.
/* Irrationality and normality */ Is such a problem remains open?
