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Topic: Yasumasa Kanada


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Pi

In the News (Sat 12 Dec 09)

  
  Yasumasa Kanada - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-11-01)
Yasumasa Kanada (金田 康正) is a Japanese mathematician most known for his numerous world records over the past two decades for calculating digits of π.
Kanada is a professor in the Department of Information Science at the University of Tokyo in Tokyo, Japan.
As of 2003, Kanada held the world record calculating the number of digits in the decimal expansion of pi – exactly 1.2411 trillion digits.
en.wikipedia.org /wiki/Yasumasa_Kanada   (142 words)

  
 Encyclopedia: Yasumasa Kanada
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.
Kanada estimates that if the new version of the algorithm had been applied in 1999 to compute 206 billion digits of pi, the total calculation time on the same computer would have been cut from 83 to 38 hours.
Kanada has started to analyze the statistical distribution of the digits of pi and posted preliminary results at http://www.super-computing.org/pi-decimal_current.html.
www.nationmaster.com /encyclopedia/Yasumasa-Kanada   (549 words)

  
 Encyclopedia: Kanada
Kanada was a Hindu sage who founded the philosophical school of Vaisheshika.
Kanada ist nach der Russischen Föderation das zweitgrößte Land der Erde und grenzt an die Vereinigten Staaten (südlich und westlich von Alaska), an das zu Dänemark gehörende Grönland und an das zu Frankreich gehörende St. Pierre und Miquelon, sowie an den Pazifischen Ozean, das Nordpolarmeer und den Atlantischen Ozean.
Kanada (金田町; -machi) is a town located in Tagawa District, Fukuoka, Japan.
www.nationmaster.com /encyclopedia/Kanada   (277 words)

  
 Techzonez - Math whizzes set pi record   (Site not responding. Last check: 2007-11-01)
Yasumasa Kanada and nine other researchers at the Information Technology Centre at Tokyo University calculated the value for pi with a Hitachi supercomputer over 400 hours in September, project team member Makoto Kudo said.
Kanada's team spent five years designing the program used in the September experiment, Kudo said.The supercomputer is capable of two trillion calculations per second, or twice as fast as the one used for the current Guinness record calculation.
Pi, usually given as 3.14, is the ratio of the circumference to the diameter of a circle and has an infinite number of decimal places.Such an extremely precise calculation of the figure isn't necessary for any practical scientific use, but researchers say it contributes to improving scientific calculation methods.
www.techzonez.com /print.php?id=82   (218 words)

  
 Professor Breaks Own Record -- For Thrill of Pi
Kanada and a team of researchers set a new world record by calculating the value of pi to 1.24 trillion places, project team member Makoto Kudo said yesterday.
Kanada and his team at the Information Technology Center at Tokyo University figured out the value for pi using a Hitachi supercomputer for 400 hours in September.
Pi, usually given as 3.14, is the ratio of the circumference to the diameter of a circle and has an infinite number of decimal places.
www.you.com.au /news/1476.htm   (409 words)

  
 Geometry.Net - Book_Author: Kanada Yasumasa
In fact, the publication of new discoveries in mathematics continues at an immense rate in hundreds of scientific journals, many of them devoted to mathematics and many devoted to subjects to which mathematics is applied (such as theoretical computer science, physics or quantum mechanics).
Outdoor Living Main Page See live article Dr. Yasumasa Kanada is a Japanese mathematician most known for his numerous world records over the past two decades for calculating digits of pi.
PPSC 1999 EE Nobuyasu Ito, Yasumasa Kanada: Monte Carlo simulation of the Ising model and random number generation on the vector processor.
www4.geometry.net /book_author/kanada_yasumasa.html   (1322 words)

  
 Pi calculated to 1.24 trillion digits   (Site not responding. Last check: 2007-11-01)
Professor Yasumasa Kanada and nine other researchers at the Information Technology Center at Tokyo University calculated the value for pi with a Hitachi supercomputer over 400 hours in September, team member Makoto Kudo said.
Kanada’s team spent five years designing the program used in the September experiment, Kudo said.
The Hitachi supercomputer is capable of 2 trillion calculations per second, or twice as fast as the one used for the current Guinness record calculation.
www.nornc.com /computers/pi_trillion.htm   (218 words)

  
 Science News: Following pi down the decimal trail. @ HighBeam Research   (Site not responding. Last check: 2007-11-01)
Kanada's most recent computation required 6 hours on a new supercomputer manufactured by Hitachi.
However, for Kanada and other computer experts, computing pi is one way to test the speed and accuracy of new computers and to compare different computers.
To achieve that level, he says, he needs a computer with a greatly expanded main memory for storing the results of intermediate steps in the computation and a faster means of sending data to and from the computer.
www.highbeam.com /library/doc0.asp?DOCID=1G1:6540241&refid=holomed_1   (428 words)

  
 Yasumasa Kanada - rFind.net   (Site not responding. Last check: 2007-11-01)
Du kan också söka efter Yasumasa Kanada i andra artiklar på svenska wikipedia.
Kanada slog Ryssland med 5-0 i finalen i ishockey-VM för juniorer i Kanada.
Kanada slog Ryssland med 5-0 i finalen i ishockey-VM för juniorer i Kanada på torsdagen.
www.rfind.net /info/Yasumasa_Kanada   (275 words)

  
 yasumasa kanada   (Site not responding. Last check: 2007-11-01)
Yasumasa Kanada is a Japanese mathematician most known for his numerous world records over the past two decades for calculating digits of pi.
As of 2003, Kanada held the world record calculating the number of digits in the decimal expansion of pi -- exactly 1.2411 trillion digits.
The calculation took more than 600 hours on a Hitachi SR8000 supercomputer.
www.yourencyclopedia.net /yasumasa_kanada.html   (163 words)

  
 Chudnovsky Brothers
The race continued desultorily, through hundreds of thousands of digits, until 1981, when Yasumasa Kanada, the head of a team of computer scientists at Tokyo University, used a NEC supercomputer, a Japanese machine, to compute two million digits of pi.
A year after that, in 1987, Yasumasa Kanada and his team got a hundred and thirty-four million digits of pi, using a NEC SX-2 supercomputer.
Kanada and his team were a little surprised to learn of unknown competition operating in American cyberspace, and they got on a Hitachi supercomputer and ripped through five hundred and thirty-six million digits, beating the Chudnovskys, setting a new world record, and seeing nothing.
wadanet.com /hasegawa/chud.htm   (3467 words)

  
 Pi-Rekord?
December 2002 die Meldung, dass Yasumasa Kanada eine neue Rekordzahl für Pi gefunden habe.
The sum was worked out by a team from Tokyo University led by Professor Yasumasa Kanada, using a Hitachi supercomputer that ran for more than 400 hours.
Kanada mailte mir, dass verschiedene Artikel nicht korrekt seien ["Some error (all sentence is not correct)"] und stellte in Aussicht, die neue Zahl nächstens zu publizieren.
www.lupi.ch /ex/pirekord.htm   (214 words)

  
 deseretnews.com | Japanese researchers set record on value of pi | Deseret Morning News Web edition
TOKYO (AP) — A team of researchers at a leading national university have set a world record by calculating the value of pi to 1.24 trillion places, one of the researchers said today.
Professor Yasumasa Kanada and nine other researchers at the Information Technology Center at Tokyo University calculated the value for pi with a Hitachi supercomputer over 400 hours in September, project team member Makoto Kudo said.
The new calculation is more than six times the number of places in the record currently recognized by Guinness World Records — 206.158 billion places — which Kanada also helped calculate in 1999.
deseretnews.com /dn/print/1,1442,450018979,00.html   (208 words)

  
 Kennislink - 9 december 2002:Nieuw pi-record
In september van dit jaar is door het team van professor Yasumasa Kanada van de universiteit van Tokio een nieuw record gevestigd op het gebied van het berekenen van decimalen van het getal pi.
In 1983 bijvoorbeeld berekenden Yasumasa Kanada en Yoshiaki Tamura met behulp van een HITAC M-280H computer pi tot op 10.013.394 cijfers achter de komma.
De bijna eindeloze berekening, vertelde Kanada destijds, had alleen nog maar nut om de prestaties van een computer of de kwaliteit van een programma te testen.
www.kennislink.nl /web/show?id=92946   (946 words)

  
 Watley Archives: Computer Finds Last Digit of Pi
Researchers at Tokyo University, led by Professor Yasumasa Kanada, calculated the value for pi with a Hitachi supercomputer for over 500 hours in April.
Kanada's team has volunteered to continue building on pi by generating random numbers, but the mathematical community seems to feel it wouldn't be the same.
Most, however, do not blame Kanada or his team, acknowledging that someone would have discovered that pi is finite sooner or later.
watleyreview.com /2004/062904-3.html   (555 words)

  
 Yasumasa Kanada - Encyclopedia, History, Geography and Biography
Yasumasa Kanada - Encyclopedia, History, Geography and Biography
This encyclopedia, history, geography and biography article about Yasumasa Kanada contains research on
Yasumasa Kanada, External links, Japanese mathematicians and Japanese educators.
www.arikah.net /encyclopedia/Yasumasa_Kanada   (150 words)

  
 Geometry.Net - Book_Author: Kanada Yasumasa
Yasumasa Kanada - Encyclopedia Article About Yasumasa Kanada.
As of 2003, Kanada held the world record calculating the number of digits in the decimal expansion of pi exactly 1.2411 trillion digits.
, Yasumasa Kanada: Monte Carlo simulation of the Ising model and random number generation on the vector processor.
www4.geometry.net /detail/book_author/kanada_yasumasa.html   (1846 words)

  
 CTV.ca - Pi calculated to more than 1 trillion places- CTV News, Shows and Sports -- Canadian Television
Professor Yasumasa Kanada and nine other researchers at the Information Technology Centre at Tokyo University calculated the value for pi with a Hitachi supercomputer over 400 hours in September, project team member Makoto Kudo said.
The new calculation is more than six times the number of places in the record currently recognized by Guinness World Records - 206.158 billion places - which Kanada also helped calculate in 1999.
The Hitachi supercomputer is capable of two trillion calculations per second, or twice as fast as the one used for the current Guinness record calculation.
www.ctv.ca /servlet/ArticleNews/print/CTVNews/1039205413090_34614613?hub=SciTech&subhub=PrintStory   (251 words)

  
 the mountains of pi   (Site not responding. Last check: 2007-11-01)
Yasumasa Kanada, the brothers' pi rival at Tokyo University, uses a Hitachi S-820/80 supercomputer that is believed to be considerably faster than a Cray Y-MP8, and it burns close to half a million watts — half a megawatt, practically enough power to melt steel.
The brothers had temporarily ditched their chief competitor, Yasumasa Kanada — a pleasing development when the brothers considered that Kanada had access to a half-megawatt Hitachi monster that was supposed to be faster than a Cray.
Kanada reacted gracefully to the Chudnovskys' achievement, and he told Science News that he might be able to get at least a billion and a half digits of pi if he could obtain enough time on a Japanese supercomputer.
www.barryland.com /pi.html   (16141 words)

  
 Facts about Pi
On April 4, 1999, Pi is computed to 68,719,470,000 decimal places by Yasumasa Kanada and Daisuke Takahashi at the University of Tokyo.
On September 20, 1999, Pi is computed to 206,158,430,000 decimal places by Yasumasa Kanada and Daisuke Takahashi at the University of Tokyo.
In September 2002, Pi is computed to 1,240,000,000,000 decimal places by Professor Yasumasa Kanada at the University of Tokyo.
www.pen.k12.va.us /Div/Winchester/jhhs/math/facts/pifacts.html   (550 words)

  
 Math Trek: A Trillion Pieces of Pi, Science News Online, Dec. 14, 2002   (Site not responding. Last check: 2007-11-01)
To calculate the digits of pi, Kanada and his team used formulas involving arctangent relations of pi.
The expectation is that each of the digits from 0 to 9 should appear about one-tenth of the time.
The Kanada Laboratory has a home page at http://www.super-computing.org/.
www.sciencenews.org /20021214/mathtrek.asp   (613 words)

  
 Math Digest   (Site not responding. Last check: 2007-11-01)
A group lead by Yasumasa Kanada at the University of Tokyo Information Technology Center has found more digits of the number pi than ever before.
The 206,158,430,000th decimal digit of pi (not counting the initial digit 3) is 4.
Kanada is now checking the results to identify any interesting patterns among the newly-discovered digits.
www.ams.org /mathmedia/mathdigest/200005-pi.html   (54 words)

  
 DBLP: Yasumasa Kanada   (Site not responding. Last check: 2007-11-01)
Daisuke Takahashi, Yasumasa Kanada: High-Performance Radix-2, 3 and 5 Parallel 1-D Complex FFT Algorithms for Distributed-Memory Parallel Computers.
Takahiro Katagiri, Yasumasa Kanada: A Parallel Implementation of Eigensolver and Its Performance.
Nobuyasu Ito, Yasumasa Kanada: Monte Carlo simulation of the Ising model and random number generation on the vector processor.
www.informatik.uni-trier.de /~ley/db/indices/a-tree/k/Kanada:Yasumasa.html   (155 words)

  
 Brian.Carnell.com
Both marks were set by teams lead by Tokyo University professor Yasumasa Kanada.
As David Bailey of Lawrence Berkeley National Laboratory tells the Associated Press, calculating PI to that many places would be impossible in any sort of human-relevant timespan with all previously used methods.
The innovations that Kanada has introduced to make his PI calculations achievable are also broadly applicable to other calculation problems.
brian.carnell.com /articles/2002/12/000006.html   (218 words)

  
 Geometry.Net - Book_Author: Kanada Yasumasa
Biographie du mathematicien japonais Yasumasa Kanada (19) (plus d'images).
Discovery Science 2000 EE Nobuyasu Ito, Yasumasa Kanada: Monte Carlo simulation of the Ising model and random number generation on the vector processor.
Kanada laboratory is a part of the Department of Information Science, Faculty of Science, the University of Tokyo, Tokyo, Japan, located in Computer Centre, The University of Tokyo.
www.geometry.net /book_author/kanada_yasumasa.html   (610 words)

  
 Kanada Laboratory Homepage   (Site not responding. Last check: 2007-11-01)
Kanada laboratory is a part of the Graduate School of Frontier Sciences, Department of Frontier Informatics, the University of Tokyo, Tokyo, Japan, located in Computer Centre, The University of Tokyo.
Currently publicized PI record (latest record of more than 1 trillion digits.) Japanese article which contains the information of latest pi record was already publicized in the book (ISBN4-535-60231-X) of the Journal of Mathematical Culture with index.
Any questions regarding Kanada laboratory should go to www-admin@www.super-computing.org.
www.super-computing.org   (324 words)

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