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Pi (/ˈpaɪ/; Ancient Greek /piː/ or /peî/, uppercase Π, lowercase π, cursive ϖ; Greek: πι) is the sixteenth letter of the Greek alphabet, representing the voiceless bilabial plosive IPA:. In the system of Greek numerals it has a value of 80.
Computers use pi, the constant, when polite, Or gentle data for sad tracking aid at eclipse. In the fantasy book, Somewhen by David Saul, a 35-word piem both provides a description of the constant pi and the digits. The text is also laid out as a circle to provide another clue to the readers as to the purpose of the poem.
Politically Incorrect (commonly abbreviated PI) is a mainly German-language counter-jihad [2] political blog which focuses on topics related to immigration, multiculturalism, and Islam in Germany and Western societies.
Arithmetic–geometric mean; Bailey–Borwein–Plouffe formula; Basel problem; Borwein's algorithm; Buffon's needle; Cadaeic Cadenza; Chronology of computation of π; Circle; Euler's identity; Six nines in pi; Gauss–Legendre algorithm; Gaussian function; History of π; A History of Pi (book) Indiana Pi Bill; Leibniz formula for pi
The number π (/ p aɪ / ⓘ; spelled out as "pi") 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.
Calculated pi to 72 digits, but not all were correct 71: 1706: John Machin [2] 100: 1706: William Jones: Introduced the Greek letter ' π ' 1719: Thomas Fantet de Lagny [2] Calculated 127 decimal places, but not all were correct 112: 1721: Anonymous Calculation made in Philadelphia, Pennsylvania, giving the
Abbreviations: German written abbreviations are often punctuated and are pronounced as the full word when read aloud, such as beispielsweise for bspw. ("for example"). Unlike English, which is moving away from periods in abbreviations in some style guides, the placement of capital letters and periods is important in German. [1]
This category includes articles related to the mathematical constant pi (π), which represents the ratio of a circle's circumference to its diameter. For other uses, see Pi (disambiguation) . The main article for this category is Pi .