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- Robert_of_Chester abstract "Robert of Chester (Latin: Robertus Castrensis) was an English Arabist of the 12th century. He translated several historically important books from Arabic to Latin, by authors such as Abu Musa Jabir Ibn Hayyan and Al-Khwarizmi including:Liber algebrae et almucabola, Al-Khwārizmī's book about algebra translated in 1145 Liber de compositione alchimiae, a book about alchemy translated in 1144In the 1140s Robert worked in Spain, where the division of the country between Muslim and Christian rulers resulted in opportunities for interchange between the different cultures. However, by the end of the decade he had returned to England. Some sources identify him with Robert of Ketton (Latin: Robertus Ketenensis) who was also active as an Arabic-Latin translator in the 1140s.However, Ketton and Chester, while both places in England, are a long way apart. Also, when in Spain, Robert of Ketton was based in the Kingdom of Navarre, whereas Robert of Chester is known to have worked in Segovia.While translating Al-Khwārizmī's book about algebra, Robert of Chester made an interesting error that lives on today. Arabic script, like Hebrew script, consists of consonants with vowels punctuated underneath and often omitted. The sine originated in India, and was adopted by the Arabs who spelled the consonants as \"jb\". When Robert translated the word, not understanding the Hindu origin, he supplied Arabic vowels yielding the word for bay or inlet. In Latin, a bay or inlet is sinus. And thus, the origin of the trigonometric function named sine.".
- Robert_of_Chester nationality United_Kingdom.
- Robert_of_Chester wikiPageExternalLink dialogue-chretiens-islam.
- Robert_of_Chester wikiPageID "4369305".
- Robert_of_Chester wikiPageLength "3975".
- Robert_of_Chester wikiPageOutDegree "29".
- Robert_of_Chester wikiPageRevisionID "666045732".
- Robert_of_Chester wikiPageWikiLink Alchemy.
- Robert_of_Chester wikiPageWikiLink Algebra.
- Robert_of_Chester wikiPageWikiLink Arabic.
- Robert_of_Chester wikiPageWikiLink Arabic_alphabet.
- Robert_of_Chester wikiPageWikiLink Arabist.
- Robert_of_Chester wikiPageWikiLink Category:12th-century_English_people.
- Robert_of_Chester wikiPageWikiLink Category:Arabic–Latin_translators.
- Robert_of_Chester wikiPageWikiLink Category:Medieval_English_mathematicians.
- Robert_of_Chester wikiPageWikiLink Category:Translators_from_Arabic.
- Robert_of_Chester wikiPageWikiLink Category:Translators_of_the_Quran_into_Latin.
- Robert_of_Chester wikiPageWikiLink Chester.
- Robert_of_Chester wikiPageWikiLink Dictionary_of_National_Biography.
- Robert_of_Chester wikiPageWikiLink Floruit.
- Robert_of_Chester wikiPageWikiLink India.
- Robert_of_Chester wikiPageWikiLink Jabir_ibn_Hayyan.
- Robert_of_Chester wikiPageWikiLink Ketton.
- Robert_of_Chester wikiPageWikiLink Kingdom_of_Navarre.
- Robert_of_Chester wikiPageWikiLink Latin.
- Robert_of_Chester wikiPageWikiLink Latin_translations_of_the_12th_century.
- Robert_of_Chester wikiPageWikiLink Louis_Charles_Karpinski.
- Robert_of_Chester wikiPageWikiLink Muhammad_ibn_Musa_al-Khwarizmi.
- Robert_of_Chester wikiPageWikiLink Oxford_University_Press.
- Robert_of_Chester wikiPageWikiLink Robert_of_Ketton.
- Robert_of_Chester wikiPageWikiLink Segovia.
- Robert_of_Chester wikiPageWikiLink Sine.
- Robert_of_Chester wikiPageWikiLink The_Compendious_Book_on_Calculation_by_Completion_and_Balancing.
- Robert_of_Chester wikiPageWikiLinkText "Robert of Chester".
- Robert_of_Chester wikiPageWikiLinkText "Robert".
- Robert_of_Chester wikiPageUsesTemplate Template:Citation_needed.
- Robert_of_Chester wikiPageUsesTemplate Template:Cite_book.
- Robert_of_Chester wikiPageUsesTemplate Template:Lang-la.
- Robert_of_Chester wikiPageUsesTemplate Template:Reflist.
- Robert_of_Chester wikiPageUsesTemplate Template:Sci-hist-stub.
- Robert_of_Chester wikiPageUsesTemplate Template:UK-writer-stub.
- Robert_of_Chester subject Category:12th-century_English_people.
- Robert_of_Chester subject Category:Arabic–Latin_translators.
- Robert_of_Chester subject Category:Medieval_English_mathematicians.
- Robert_of_Chester subject Category:Translators_from_Arabic.
- Robert_of_Chester subject Category:Translators_of_the_Quran_into_Latin.
- Robert_of_Chester hypernym Arabist.
- Robert_of_Chester type Agent.
- Robert_of_Chester type Person.
- Robert_of_Chester type Writer.
- Robert_of_Chester type Person.
- Robert_of_Chester type Occupation.
- Robert_of_Chester type Translator.
- Robert_of_Chester type Writer.
- Robert_of_Chester type Agent.
- Robert_of_Chester type NaturalPerson.
- Robert_of_Chester type Thing.
- Robert_of_Chester type Q215627.
- Robert_of_Chester type Q36180.
- Robert_of_Chester type Q5.
- Robert_of_Chester type Person.
- Robert_of_Chester comment "Robert of Chester (Latin: Robertus Castrensis) was an English Arabist of the 12th century.".
- Robert_of_Chester label "Robert of Chester".
- Robert_of_Chester sameAs Q715419.
- Robert_of_Chester sameAs روبرت_أوف_تشستر.
- Robert_of_Chester sameAs Robert_z_Chesteru.
- Robert_of_Chester sameAs Robert_von_Chester.
- Robert_of_Chester sameAs Robert_de_Chester.
- Robert_of_Chester sameAs Robert_Chesteriläinen.
- Robert_of_Chester sameAs Robert_de_Chester.
- Robert_of_Chester sameAs Roberto_di_Chester.
- Robert_of_Chester sameAs チェスターのロバート.
- Robert_of_Chester sameAs Robertus_Castrensis.
- Robert_of_Chester sameAs Robert_van_Chester.
- Robert_of_Chester sameAs Robert_de_Chester.
- Robert_of_Chester sameAs Robert_z_Chester.
- Robert_of_Chester sameAs m.0bzlsn.
- Robert_of_Chester sameAs Robert_z_Chesteru.
- Robert_of_Chester sameAs Q715419.
- Robert_of_Chester wasDerivedFrom Robert_of_Chester?oldid=666045732.
- Robert_of_Chester isPrimaryTopicOf Robert_of_Chester.