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The infinite length of ostensibly random decimal points in <math>\pi</math> lead to the assumption that pi is a normal number: it contains every possible finite sequence of digits, and therefore, every birthday, even the equivalent of every bo
| url = http://www-groups.dcs.st-and.ac.uk/history/HistTopics/Pi_through_the_ages.html
| url = http://www-groups.dcs.st-and.ac.uk/history/HistTopics/Pi_through_the_ages.html
| title = A history or Pi
| title = A history or Pi
| accessdate = 2012-02-11}}</ref> who selected '''<big><math>\pi</math></big>''' because it is the first letter of the Greek word for [[perimeter]] (''περίμετρος''), i.e. the circumference of a circle is its perimeter. A Swiss mathematician, [[Leonhard Euler]], brought the concept into general use in 1737. The [[infinite]] length of ostensibly [[random]] decimal points in <math>\pi</math> means that it contains the equivalent of every book ever written, every birthday, and every other number.
| accessdate = 2012-02-11}}</ref> who selected '''<big><math>\pi</math></big>''' because it is the first letter of the Greek word for [[perimeter]] (''περίμετρος''), i.e. the circumference of a circle is its perimeter. A Swiss mathematician, [[Leonhard Euler]], brought the concept into general use in 1737. The [[infinite]] length of ostensibly [[random]] decimal points in <math>\pi</math> lead to the assumption that pi is a [[normal number]]: it contains every possible finite sequence of digits, and therefore, every birthday, even the equivalent of every book ever written.
<big><math>\pi</math></big> is referenced in the [[Bible]], literature, and even as the title of a movie. It is central to the most famous identity in all of mathematics: [[Euler's Formula|Euler's Identity]].
<big><math>\pi</math></big> is referenced in the [[Bible]], literature, and even as the title of a movie. It is central to the most famous identity in all of mathematics: [[Euler's Formula|Euler's Identity]].