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- Sakabe_Kōhan abstract "Sakabe Kōhan (坂部 廣胖, 1759 – September 16, 1824) was a Japanese mathematician in the Edo period.Sakabe served for a time in the Fire Department of the shogunate, but he resigned that position to become a ronin or masterless samurai. He spent the rest of this life in study, in teaching, and in promoting mathematics education in Japan.Sakabe was a student of Ajima Naonobu.Sakabe investigated some European and Chinese works which had appeared in Japan, but his general a method was later construed to be innovative, clarified and thus improved. Foreign influence shows itself indirectly some of his published work.Sakabe's Sampo Tenzan Shinan-roku (Treatise on Tenzan Algebra) in 1810 was the first published work in Japan proposing the use of logarithmic tables. He explained that "these tables save much labor, [but] they are but little known for the reason that they have never been printed in our country." Sakabe's proposal would not be realized until twenty years after his death when the first extensive logarithmic table was published in 1844 by Koide Shuki.In Sakabe's Treatise on Tenzan Algebra, mathematical problems are arranged in order from easy problems to difficult ones. The text presents a method for finding the length of a circumference and the length an arc of an ellipse. This was the first appearance of the problems pertaining to ellipses in printed books in Japan.".
- Sakabe_Kōhan birthDate "1759".
- Sakabe_Kōhan birthYear "1759".
- Sakabe_Kōhan deathDate "1824-09-16".
- Sakabe_Kōhan deathYear "1824".
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- Sakabe_Kōhan wikiPageExternalLink 1515528.
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- Sakabe_Kōhan wikiPageExternalLink historyofjapanes00smitiala.
- Sakabe_Kōhan wikiPageID "27397220".
- Sakabe_Kōhan wikiPageLength "5405".
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- Sakabe_Kōhan wikiPageRevisionID "668058744".
- Sakabe_Kōhan wikiPageWikiLink Abacus.
- Sakabe_Kōhan wikiPageWikiLink Ajima_Naonobu.
- Sakabe_Kōhan wikiPageWikiLink Category:1759_births.
- Sakabe_Kōhan wikiPageWikiLink Category:1824_deaths.
- Sakabe_Kōhan wikiPageWikiLink Category:18th-century_Japanese_mathematicians.
- Sakabe_Kōhan wikiPageWikiLink Category:19th-century_Japanese_mathematicians.
- Sakabe_Kōhan wikiPageWikiLink Category:Japanese_writers_of_the_Edo_period.
- Sakabe_Kōhan wikiPageWikiLink Common_logarithm.
- Sakabe_Kōhan wikiPageWikiLink David_Eugene_Smith.
- Sakabe_Kōhan wikiPageWikiLink Edo_period.
- Sakabe_Kōhan wikiPageWikiLink Ellipse.
- Sakabe_Kōhan wikiPageWikiLink Japan.
- Sakabe_Kōhan wikiPageWikiLink Japanese_mathematics.
- Sakabe_Kōhan wikiPageWikiLink Koide_Chōjūrō.
- Sakabe_Kōhan wikiPageWikiLink Koide_Shuki.
- Sakabe_Kōhan wikiPageWikiLink Mathematician.
- Sakabe_Kōhan wikiPageWikiLink OCLC.
- Sakabe_Kōhan wikiPageWikiLink Ronin.
- Sakabe_Kōhan wikiPageWikiLink Rōnin.
- Sakabe_Kōhan wikiPageWikiLink Sangaku.
- Sakabe_Kōhan wikiPageWikiLink Shinto_shrine.
- Sakabe_Kōhan wikiPageWikiLink Shinto_shrines.
- Sakabe_Kōhan wikiPageWikiLink Soroban.
- Sakabe_Kōhan wikiPageWikiLink Wasan.
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- Sakabe_Kōhan wikiPageWikiLink Yoshio_Mikami.
- Sakabe_Kōhan wikiPageWikiLinkText "Kōhan, Sakabe".
- Sakabe_Kōhan wikiPageWikiLinkText "Sakabe Kōhan".
- Sakabe_Kōhan dateOfBirth "1759".
- Sakabe_Kōhan dateOfDeath "1824-09-16".
- Sakabe_Kōhan hasPhotoCollection Sakabe_Kōhan.
- Sakabe_Kōhan name "Sakabe Kōhan".
- Sakabe_Kōhan shortDescription "Mathematician".
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- Sakabe_Kōhan description "Mathematician".
- Sakabe_Kōhan description "Mathematician".
- Sakabe_Kōhan subject Category:1759_births.
- Sakabe_Kōhan subject Category:1824_deaths.
- Sakabe_Kōhan subject Category:18th-century_Japanese_mathematicians.
- Sakabe_Kōhan subject Category:19th-century_Japanese_mathematicians.
- Sakabe_Kōhan subject Category:Japanese_writers_of_the_Edo_period.
- Sakabe_Kōhan type Agent.
- Sakabe_Kōhan type Person.
- Sakabe_Kōhan type Person.
- Sakabe_Kōhan type Agent.
- Sakabe_Kōhan type NaturalPerson.
- Sakabe_Kōhan type Thing.
- Sakabe_Kōhan type Q215627.
- Sakabe_Kōhan type Q5.
- Sakabe_Kōhan type Person.
- Sakabe_Kōhan comment "Sakabe Kōhan (坂部 廣胖, 1759 – September 16, 1824) was a Japanese mathematician in the Edo period.Sakabe served for a time in the Fire Department of the shogunate, but he resigned that position to become a ronin or masterless samurai.".
- Sakabe_Kōhan label "Sakabe Kōhan".
- Sakabe_Kōhan sameAs Sakabe_Kōhan.
- Sakabe_Kōhan sameAs 坂部広胖.
- Sakabe_Kōhan sameAs m.0c007ln.
- Sakabe_Kōhan sameAs Q7402732.
- Sakabe_Kōhan sameAs Q7402732.
- Sakabe_Kōhan wasDerivedFrom Sakabe_Kōhan?oldid=668058744.
- Sakabe_Kōhan isPrimaryTopicOf Sakabe_Kōhan.
- Sakabe_Kōhan name "Sakabe Kōhan".