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  2. Chronology of computation of π - Wikipedia

    en.wikipedia.org/wiki/Chronology_of_computation...

    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 ...

  3. Zu Chongzhi - Wikipedia

    en.wikipedia.org/wiki/Zu_Chongzhi

    calculating one year as 365.24281481 days, which is very close to 365.24219878 days as we know today. calculating the number of overlaps between sun and moon as 27.21223, which is very close to 27.21222 as we know today; using this number he successfully predicted an eclipse four times during 23 years (from 436 to 459).

  4. Emma Haruka Iwao - Wikipedia

    en.wikipedia.org/wiki/Emma_Haruka_Iwao

    Emma Haruka Iwao (born April 21, 1984) is a Japanese computer scientist and cloud developer advocate at Google. [5] [6] In 2019 Haruka Iwao calculated the then world record for most accurate value of pi (π); which included 31.4 trillion digits, exceeding the previous record of 22 trillion.

  5. A Google employee broke the world record for calculating pi - AOL

    www.aol.com/2019-03-14-a-google-employee-broke...

    Google engineer Emma Haruka Iwao has calculated pi to 31 trillion digits, breaking the world record.

  6. Approximations of π - Wikipedia

    en.wikipedia.org/wiki/Approximations_of_π

    The best known approximations to π dating to before the Common Era were accurate to two decimal places; this was improved upon in Chinese mathematics in particular by the mid-first millennium, to an accuracy of seven decimal places.

  7. Chudnovsky algorithm - Wikipedia

    en.wikipedia.org/wiki/Chudnovsky_algorithm

    The Chudnovsky algorithm is a fast method for calculating the digits of π, based on Ramanujan's π formulae.Published by the Chudnovsky brothers in 1988, [1] it was used to calculate π to a billion decimal places.

  8. Chinese mathematics - Wikipedia

    en.wikipedia.org/wiki/Chinese_mathematics

    The first reference to a book being used in learning mathematics in China is dated to the second century CE (Hou Hanshu: 24, 862; 35,1207). We are told that Ma Xu, who is a youth c. 110, and Zheng Xuan (127–200) both studied the Nine Chapters on Mathematical procedures. Christopher Cullen claims that mathematics, in a manner akin to medicine ...

  9. AOL Mail

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    AOL Mail is free and helps keep you safe. From security to personalization, AOL Mail helps manage your digital life Start for free