Pi Directory
David H. Bailey
Update: 8 July 2021
Press articles on pi, most recent listed last:
- Ivars Peterson, "Pick a digit, any digit," Science News Online, 28 Feb 1998, available at
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- Charles Seife, "Randomly distributed slices of pi," Science, vol. 293, 3 Aug 2001, pg. 793, available at
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- Ivars Peterson, "Pi a la mode," Science News, 1 Sep 2001, available at
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- W. Wayt Gibbs, "A digital slice of pi: A new way to do pure math: Experimentally, Scientific American, May 2003, pg. 23, available at
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- Erica Klarreich, "Math Lab: Computer experiments are transforming mathematics," Science News, vol. 165, 24 Apr 2004, available at
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- June Kronholz, "If pious revelry gets you down, calculate the joys of pi day, Wall Street Journal, 15 Mar 2005, available at
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- John Markoff, "14,159,265 new slices of rich technology," New York Times, 19 Aug 2005, available at
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- Ivars Peterson, "Quilting pi," Science News, 6 May 2006, available at
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- Erica Klarreich, "Springfield theory: mathematical references abound on The Simpsons," Science News, 10 Jun 2006, available at
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See also item #2 in the next section below for the fax mentioned in this article.
- Elizabeth Landau, "On pi day, one number 'reeks of mystery'," CNN, 12 Mar 2010, available at
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- Linda Vu, "Supercomputers crack sixty-trillionth binary digit of
Pi-Squared," Dept. of Energy, 28 Apr 2011, available at
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- David H. Bailey and Jonathan M. Borwein, "Are the digits of pi random?," Huffington Post, 16 Apr 2013, available at
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- [no author], "Just in time for pi day," Newswise, 4 Mar 2014, available at
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Other general-interest items related to pi:
- David Anderson's decimal pi search facility:
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- Fax to Bailey from "The Simpsons" TV show requesting digits of pi:
PDF.
Note: The 40,000th digit of pi was provided to the show by Bailey:
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- Alexander Yee's pi site (describes his computer program for computing pi to 50 trillion digits, as of the above date):
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- Fortran-90 and C programs implementing the BBP pi algorithm:
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- The University of Newcastle/CARMA "Walking on Numbers" site (random walk on the first 100 billion base-4 digits of pi):
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- LBNL "wonder" website:
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Technical papers on pi, most recent listed last:
- David H. Bailey, Peter B. Borwein and Simon Plouffe, "On the rapid computation of various polylogarithmic constants" (original paper of the BBP formula and algorithm), Mathematics of Computation, vol. 66, no. 218 (Apr 1997), pg. 903-913, available at
PDF.
- David H. Bailey, Jonathan M. Borwein, Peter B. Borwein and Simon Plouffe, "The quest for pi," Mathematical Intelligencer, vol. 19, no. 1 (Jan 1997), pg. 50-57, available at
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- David H. Bailey, "The BBP algorithm for pi," manuscript, 17 Sep 2006, available at
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- Jonathan Borwein, "The life of pi: From Archimedes to Eniac and beyond," manuscript, Mar 2010, available at
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- David H. Bailey, Jonathan M. Borwein, Andrew Mattingly and Glenn Wightwick, "The computation of previously inaccessible digits of pi^2 and Catalan's constant," Notices of the American Mathematical Society, to appear, 11 Apr 2011, available at
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- David H. Bailey, Jonathan M. Borwein, Cristian S. Calude, Michael J. Dinneen, Monica Dumitrescu and Alex Yee, "An empirical approach to the normality of pi," Experimental Mathematics, vol. 21 (2012), pg. 375-384, available at
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- David H. Bailey and Jonathan M. Borwein, "Pi day is upon us again, and we still do not know if pi is normal," American Mathematical Monthly, March 2014, pg. 191-206, available at
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- David H. Bailey, "A short history of pi formulas," manuscript, 8 Nov 2016, available at
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- David H. Bailey, "A compendium of BBP-Type formulas for mathematical constants," manuscript, 15 Aug 2017, available at
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- David H. Bailey, "A collection of mathematical formulas involving pi," manuscript, 6 Feb 2018, available at
PDF.