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The first to use an electronic computer (the ENIAC) to calculate π [25] 70 hours 2,037: 1953: Kurt Mahler: Showed that π is not a Liouville number: 1954 S. C. Nicholson & J. Jeenel Using the NORC [26] 13 minutes 3,093: 1957 George E. Felton: Ferranti Pegasus computer (London), calculated 10,021 digits, but not all were correct [27] [28] 33 ...
PiFast 4.4 is available from Stu's Pi page. PiFast 4.3 is available from Gourdon's page. QuickPi by Steve Pagliarulo for Windows is faster than PiFast for runs of under 400 million digits. Version 4.5 is available on Stu's Pi Page below. Like PiFast, QuickPi can also compute other irrational numbers like e, √ 2, and √ 3.
John William Wrench, Jr. (October 13, 1911 – February 27, 2009) was an American mathematician who worked primarily in numerical analysis.He was a pioneer in using computers for mathematical calculations, and is noted for work done with Daniel Shanks to calculate the mathematical constant pi to 100,000 decimal places.
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The gestation figures given here are shown in days. They represent average values and should only be considered as approximations. Main article: Pregnancy (mammals) § Gestation periods
In 2004, Andrew Huang wrote a song that was a mnemonic for the first fifty digits of pi, titled "I am the first 50 digits of pi". [14] [15] The first line is: Man, I can’t - I shan’t! - formulate an anthem where the words comprise mnemonics, dreaded mnemonics for pi. In 2013, Huang extended the song to include the first 100 digits of pi ...
Thus, in equation 4, the angle associated with the product is: arctan a 1 b 2 + a 2 b 1 b 1 b 2 − a 1 a 2 {\displaystyle \arctan {\frac {a_{1}b_{2}+a_{2}b_{1}}{b_{1}b_{2}-a_{1}a_{2}}}} Note that this is the same expression as occurs in equation 3 .
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