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Kanada Yasumasa:     more detail

One divided by Pi (to 1 million digits)Kanada Yasumasa by Kanada Yasumasa, 2009-07-14 One Divided By pi (to 1 million digits) by Yasumasa Kanada, 2010-07-06 Pai no hanashi (Japanese Edition) by Yasumasa Kanada, 1991 VAISEIKA: An entry from Macmillan Reference USA's <i>Encyclopedia of Religion</i> by Kisor Chakrabarti, 2005 The Contributions of Japanese Mathematicians since 1950: An entry from Gale's <i>Science and Its Times</i> by P. Andrew Karam, 2001

lists with details

21. Browse Top Level > Texts > Project Gutenberg > Subject > Mathematics
    There is no description available for this text. Author Kanada, Yasumasa KeywordsAuthors K Kanada, Yasumasa; Titles O ; Subject Mathematics.  
    http://www.archive.org/texts/textslisting-browse.php?collection=gutenberg&cat=Su

22. K-12 Math And Computer Science Colloquium
    Dr. Yasumasa Kanada. Computer Centre, The University of Tokyo Department of Information Science,  
    http://www.ncsa.uiuc.edu/Edu/RSE/pirse.html
    
    Extractions: 4:00 pm, Monday, November 27, 1995, 4169 Beckman Institute ABSTRACT: About five years ago I had calculated pi to 1 billion decimal places using the HITAC S-820/80 supercomputer. This year, I have calculated pi to 3.2 billion and 4.2 billion decimal places by late June and August, respectively, using the HITAC S-3800/480. The main algorithm used for the calculation was based on the AGM algorithm which was suggested by Salamin and Brent in 1976. For verification, I used a fourth order algorithm which was developed in the early 1980's by Jonathan and Peter Borwein. In order to generate more than 1 billion decimal places of pi, supercomputers, fast Fourier transforms for "big-number arithmetic" and the challenge of competition were all crucial. In my talk, I will include a discussion of how I successfully implemented the algorithms, and my future plans for a new record. Please explore a related K-12 project: Mathematics Sponsored by NCSA Education and Outreach Division

23. Non-Fiction - University Of Maryland
    Humphrey, SD Irving, Henry Brodribb Joly, Norman F. Kanada, Yasumasa Kane, WilliamTerence Keene, HG Kehoe, Brendan P. Keith, Marian Keller, Helen Kempis  
    http://www.lib.umd.edu/ETC/ReadingRoom/Nonfiction/
    
    Extractions: Abbott, David Phelps Adams, Henry Adams, John Quincy Addams, Jane ... History Reviews On-Line An on-line journal featuring book reviews. Humphrey, S. D. Irving, Henry Brodribb Joly, Norman F. Kanada, Yasumasa ... Roget, Peter Mark Roget's Thesaurus Roosevelt, Theodore Ross, Edmund G. Rowlandson, Mary White Rumford, Benjamin ... University of Maryland , College Park, MD 20742-7011 (301)405-0800

24. PROJECT GUTENBERG - Catalog By Author - Index - Kanada, Yasumasa
    INDEX What is PG Etext Listings. Etexts by Author Kanada, Yasumasa K Index Main Index One Divided by pi. Opera The World's FASTER Browser!  
    http://www.informika.ru/text/books/gutenb/gutind/TEMP/i-_kanada_yasumasa.html

25. PROJECT GUTENBERG - Catalog By Author - Kanada, Yasumasa
    Etexts by Author Kanada, Yasumasa K Index Main Index OneDivided by pi LANGUAGE English SUBJECT Mathematics NOTES Math  
    http://www.informika.ru/text/books/gutenb/gutind/TEMP/kanada_yasumasa.html

26. Author-Index
    Kan, WingKay*; Kan, Wing-kay*; Kan, X. Kan, YM; Kan, Zhengyan; Kanaan,Ghassan*; Kanada, Yasumasa*; Kanada, Yasusi*; Kanade, Takeo*; Kanadjian  
    http://www.informatik.uni-trier.de/~ley/db/indices/a-tree/A796.html

27. Untitled
    Member of HINTS Project. Information Technology Center, The Universityof Tokyo @@Prof.@Kanada, Yasumasa. Information Technology  
    http://www.hints.org/HINTSmem.htm

28. Record For Pi : 51.5 Billion Decimal Digits
    From Kanada@pi.cc.utokyo.ac.jp (Yasumasa Kanada) Subject New worldrecord of pi 51.5 billion decimal digits Dear pi people;.  
    http://www.cecm.sfu.ca/personal/jborwein/Kanada_50b.html
    
    Extractions: Subject: New world record of pi : 51.5 billion decimal digits Dear pi people; Now is the time for the announcement of new world record of pi. It took longer time than our expectation. Nearly two years has passed since we got new world record of 6.4 billion. Now, we got eight times more record than 6.4 billion as the following texts which you can get with anonymous ftp to 'www.cc.u-tokyo.ac.jp' Yasumasa KANADA , Computer Centre, University of Tokyo Our latest record was established as follows: Yasumasa KANADA and Daisuke TAKAHASHI Two independent calculations based on two different algorithms generated 51,539,607,552 (=3*2^34) decimal digits of pi and comparison of two generated sequences matched 51,539,607,510 decimal digits, e.g., a 42 decimal digits difference. Then we are declaring 51,539,600,000 decimal digits as the new world record. ( See related lecture on Pi and Mathland article Main program run:

29. Yasumasa Kanada
    Name, Yasumasa Kanada. Job Title, Professor. Function Name, InformationTechnology Center Computer Centre Division. Lecture Course, Undergraduate  
    http://www.adm.u-tokyo.ac.jp/IRS/IntroPage_E/intro47422077_e.html

30. Peripheria - Yasumasa Kanada (19??)
    Yasumasa Kanada (19). retour aux mathématiciens (plus d'images).Yasumasa Kanada, mathématicien japonais né en 19 au Japon.  
    http://www.peripheria.net/bios/kanada/

31. Historique Des Records - Peripheria
    Translate this page La valeur du nombre pi la plus précise. En 1999, 206'158'430'000 calculées parles professeurs Yasumasa Kanada et Daisuke Tahashi de l'université de Tokyo.  
    http://www.peripheria.net/recordsl.php
    
    Extractions: [ SPONSOR ] dernière mise à jour : 28/03/2001 Cette page contient l'historique des records relatifs au nombre Pi, pour ne voir que les derniers records en date allez à la page des records En 1999 , 206'158'430'000 calculées par les professeurs Yasumasa Kanada et Daisuke Tahashi de l'université de Tokyo. Ils ont fait le calcul deux fois avec deux algorithmes différents pour limiter les risques d'erreur. Le premier programme a tourné pendant 37h 21min 04sec (du 18 septembre 1999 19:00:52 au 20 septembre 1999 08:21:56) en utilisant l'algorithme Gauss-Legendre, et a nécessité 865Go de mémoire centrale. Le deuxième programme a tourné pendant 46h 07min 10sec (du 26 juin 1999 01:22:50 au 27 juin 1999 23:30:40) en utilisant l'Itération de Borwein du 4 ème ordre et a nécessité 817Go en mémoire centrale. L'ordinateur utilisé pour ces calculs est : un

32. LitSearch: An Online Literary Database
    Kanada, Yasumasa (00) Works by this author One Divided By pi (to 1 milliondigits). Copyright 2001 Keith Ito. All Rights Reserved. Admin Control Panel.  
    http://daily.stanford.edu/litsearch/servlet/DescribeAuthor?name=Kanada, Yasumasa

33. LitSearch: An Online Literary Database
    Authors whose last names begin with 'K' Kanada, Yasumasa Kane, William Terence Kay,Ross Keats, John Keene, HG (Henry George) Kehoe, Brendan P. Keith, Marian  
    http://daily.stanford.edu/litsearch/servlet/DescribeAuthor?name=K

34. Results
    Search Results. Search Results for Yasumasa Kanada IN author Found3 of 105,850 searched. Rerun within the Portal Search within Results  
    http://portal.acm.org/results.cfm?query=P305000 author&querydisp=Yasumasa

35. Citation
    New York, United States Hashing LEMMAs on time complexities with applicationsto formula manipulation Authors Eiichi Goto Yasumasa Kanada Sponsor SYMSAC  
    http://portal.acm.org/citation.cfm?id=806334&coll=portal&dl=ACM&CFID=11111111&CF

36. Math Trek : A Trillion Pieces Of Pi, Science News Online, Dec. 14, 2002
    Computer scientist Yasumasa Kanada and his coworkers at the University of Tokyo InformationTechnology Center have now succeeded in computing 1,241,100,000,000  
    http://www.sciencenews.org/20021214/mathtrek.asp
    
    Extractions: Week of Dec. 14, 2002; Vol. 162, No. 24 Ivars Peterson The number pi ( p ) represents the ratio of a circle's circumference to its diameter. Starting with 3.1415926535897932384. . ., its digits run on forever. That hasn't stopped researchers from trying to calculate as many of those digits as computer technology and mathematical methods allow. Computer scientist Yasumasa Kanada and his coworkers at the University of Tokyo Information Technology Center have now succeeded in computing 1,241,100,000,000 decimal digits of pi, smashing their own previous world record of 206,158,430,000 digits, set in 1999. The calculation required about 602 hours on a Hitachi SR8000 computer, with access to a memory of about 1 terabyte. To calculate the digits of pi, Kanada and his team used formulas involving arctangent relations of pi. For instance, you can use the following expression to work out the value of the arctangent of x to any desired number of decimal places just by evaluating the series to a sufficiently large number of terms: arctangent( x x x x x x The value of pi can then be obtained from the following equation: p = 16 arctangent(1/5) – 4 arctangent(1/239).

37. Pi By The Billions - References And Sources, Science News Online (10/16/99)
    Yasumasa Kanada and his colleagues have computed 206.2 billion decimal digits ofpi, besting their previous record of 51.5 billion digits. References Sources  
    http://www.sciencenews.org/sn_arc99/10_16_99/note6ref.htm
    
    Extractions: Pi by the billions Yasumasa Kanada and his colleagues have computed 206.2 billion decimal digits of pi, besting their previous record of 51.5 billion digits. References: Kanada’s announcement of his computation of 206.2 billion digits of pi can be found at http://www.cecm.sfu.ca/personal/jborwein/Kanada_200b.html , with additional details at ftp://www.cc.u-tokyo.ac.jp/README.our_latest_record Further Readings: Peterson, I. 1998. Picking off more pieces of pi. Science News 154(Oct. 17):255. . 1997. An enormous chunk of pi. Science News 152(Aug. 9):92. . 1995. A new formula for picking off pieces of pi. Science News 148(Oct. 28):279. Additional information about pi can be found at http://www.cecm.sfu.ca/personal/jborwein/pi_cover.html Sources:

38. New World Record: 4th October 1999
    Yasumasa Kanada Information Technology Center, Computer Centre Division,University of Tokyo Bunkyoku Yayoi 2-11-16 Tokyo 113-8658 Japan.  
    http://www.lupi.ch/PiSites/Pi-Rekord.html
    
    Extractions: Dear folks, our latest record was established as the followings: Declared record: decimal digits Two independent calculation based on two different algorithms generated 206,158,430,208 (=3*2^36) decimal digits of pi and comparison of two generated sequences matched up to 206,158,430,163 decimal digits, e.g., 45 decimal digits difference. Then we are declaring 206,158,430,000 decimal digits as the new world record. Optimized Main program run:

39. New Records At 6th July '97 And 5th April '99
    Yasumasa Kanada Computer Centre, University of Tokyo Bunkyoku Yayoi 2-11-16 Tokyo113 Japan Fax +81-3-3814-7231 (office) E-mail Yasumasa Kanada  
    http://www.lupi.ch/PiSites/Pi-Rekordold.html
    
    Extractions: first message from 1 Aug 97 - second message from April 99 Posted-Date: Fri, 1 Aug 1997 15:20:22 -0200 (GMT) Mime-Version: 1.0 Date: Fri, 1 Aug 1997 15:32:00 +0200 lmueller@pop.agri.ch From: xpolakis@hol.gr (Antreas P. Hatzipolakis) Subject: Pi Dear Lukas, Greetings from Athens - Antreas Latest PI news by Dear PI people; Now is the time for the announcement of new world record of pi. It took longer time than our expectation. Nearly two years has passed since we got new world record of 6.4 billion. Now, we got eight times more record than 6.4 billion as the following texts which you can get with anonymous ftp Our latest record was established as follows: Declared record: decimal digits Two independent calculations based on two different algorithms generated 51,539,607,552 (=3*2^34) decimal digits of pi and comparison of two generated sequences matched 51,539,607,510 decimal digits, e.g., a 42 decimal digits difference. Then we are declaring 51,539,600,000 decimal digits as the new world record. (See related lecture on Pi.) Main program run: Job start : 6th June 1997 22:29:06 Job end : 8th June 1997 03:32:17 Elapsed time : 29:03:11 Main memory : 212 GB Algorithm : Borwein's 4-th order convergent algorithm (Run the algorithm.)

40. An Efficient Implementation Of Parallel Eigenvalue Computation For Massively Par
    of Parallel Eigenvalue Computation for Massively Parallel Processing (Make Corrections)Takahiro Katagiri, Yasumasa Kanada Parallel Computing Home/Search  
    http://citeseer.nj.nec.com/480017.html
    
    Extractions: Abstract: This article describes an efficient implementation and evaluation of a parallel eigensolver for computing all eigenvalues of dense symmetric matrices. Our eigensolver uses a Householder tridiagonalization method, which has higher parallelism and performance than conventional methods when problem size is relatively small, e.g. the order of 10,000. This is very important for relevant practical applications, where many diagonalizations for such matrices are required so often. The routine was... (Update)

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