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Tratado da Esfera

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O “Tratado da Esfera” foi o livro-texto mais usado por astrônomos, astrólogos, cosmógrafos e navegadores europeus durante alguns séculos. Inspirou várias outras obras similares e foi copiado, comentado, plagiado, e traduzido em diversas línguas. A tradução é de D. Pedro Nunes, considerado um dos maiores matemáticos de seu tempo. Sua tradução (anotada) tinha como objetivo levar o saber cosmológico teórico aos desbravadores do Novo Mundo. Trata-se de uma verdadeira introdução à arte da Astronomia do Quadrivium.

A edição da Concreta é bilíngüe e vem acompanhada de diversos diagramas tirados de diferentes manuscritos renascentistas. A obra também conta com introdução e notas do prof. Marcos Vinícius Monteiro.

152 pages, Paperback

First published January 1, 1499

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About the author

Johannes de Sacrobosco

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Johannes de Sacrobosco (c.1195 – c.1256), was a scholar, monk, and astronomer who taught at the University of Paris.

He wrote a short introduction to the Hindu-Arabic numeral system. Judging from the number of manuscript copies that survive today, for the next 400 years it became the most widely read book on that subject. He also wrote a short textbook which was widely read and influential in Europe during the later medieval centuries as an introduction to astronomy. In his longest book, on the computation of the date of Easter, Sacrobosco correctly described the defects of the then-used Julian calendar, and recommended a solution similar to the modern Gregorian calendar three centuries before its implementation.

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November 17, 2018
Johannes de Sacrobosco (sometimes "John of Holy Wood" or "John of Holy Bush")'s "De sphaera mundi" was the most commonly used astronomical university textbook from 1230 through perhaps 1600, much supplemented with commentaries.

"De Sphaera" was translated into English by Lynn Thorndike in 1949 as The Sphere of Sacrobosco and Its Commentators. The unillustrated text is found here: http://esotericarchives.com/solomon/s... , however the version online lacks illustrations (and much in the way of commentary). I don't know if this is true of the version in print, although from a complaining reviewer, at least one edition is unillustrated.

Sacrobosco also wrote "Algorismus" or "De Arte Numerandi", which introduced Hindu-Arabic numerals to the university curriculum.

He is also NOT the Johan in David Eugene Smith's "Number Stories of Long Ago", who instead is Johannes Widmann, a popularizer of + and - signs.
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