Pi Directory

David H. Bailey
Update: 2008-03-01


Press articles on pi, most recent listed last:

  1. 1998 Science News article on BBP formula (28 Feb 1998): HTML.
  2. 2001 Science article on randomness of pi (3 Aug 2001): PDF.
  3. 2001 Science News article on randomness of pi (1 Sep 2001): SN 2001.
  4. 2003 Scientific American article on experimental math and pi (May 2003): PDF
  5. 2004 Science News article on experimental math and pi (24 Apr 2004): PDF
  6. 2005 Wall Street Journal article on "Pi day" (15 Mar 2005): PDF
  7. 2005 New York Times on Google's public offering notes that number of shares are digits of pi (19 Aug 2005): HTML
  8. 2006 Science News article on quilting the digits of pi (6 May 2006): HTML
  9. 2006 Science News article on math (and pi) in The Simpsons TV show (10 Jun 2006): HTML
    See also item #3 below for the fax mentioned in this article.

Other general-interest items related to pi:

  1. LBNL "wonder" website: HTML
  2. Online pi search tool (see if your name or a hexadecimal string occurs in the first four billion binary digits of pi): http://pisearch.lbl.gov
  3. David Anderson's decimal pi search facility: http://www.angio.net/pi/piquery"
  4. Fax to DHB from "The Simpons" TV show: PDF.
    Note: The 40,000th digit of pi was provided to the show by DHB, and this was aired in the show on May 6, 1993 -- search for "Marge in Chains" on the page HTML.
  5. Jonathan Borwein's pi site: HTML
  6. Yasumasa Kanada's pi site: HTML

Technical papers on pi:

  1. A paper on the history of pi: PDF.
  2. A short paper on the BBP pi formula and algorithm: PDF.
  3. A Fortran-90 and C programs implementing the BBP pi algorithm: BBP computer codes
  4. The 1996 technical paper that first presented the BBP pi formula: PDF.
  5. The Bailey-Crandall paper on randomness: PDF.
  6. The Bailey-Crandall paper on normality: PDF