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Pi Day Is Upon Us Again and We Still Do Not Know if Pi Is Normal

David H. Bailey and Jonathan Borwein
The American Mathematical Monthly
Vol. 121, No. 3 (March 2014), pp. 191-206
DOI: 10.4169/amer.math.monthly.121.03.191
Stable URL: http://www.jstor.org/stable/10.4169/amer.math.monthly.121.03.191
Page Count: 16
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Pi Day Is Upon Us Again and We Still Do Not Know if Pi Is Normal
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Abstract

Abstract The digits of π have intrigued both the public and research mathematicians from the beginning of time. This article briefly reviews the history of this venerable constant, and then describes some recent research on the question of whether π is normal, or, in other words, whether its digits are statistically random in a specific sense.

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