Liber Abaci cover

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Liber Abaci


Liber Abaci (also spelled as Liber Abbaci) ("The Book of Calculation") is a 1202 historic book on arithmetic by Leonardo of Pisa, posthumously known as Fibonacci. Liber Abaci was among the first Western books to describe the Hindu–Arabic numeral system and to use symbols traditionally described as "Arabic numerals". By addressing the applications of both commercial tradesmen and mathematicians, it contributed to convincing the public of the superiority of the system, and the use of these glyphs.Although the book's title has also been translated as "The Book of the Abacus", Sigler (2002) writes that this is an error: the intent of the book is to describe methods of doing calculations without aid of an abacus, and as Ore (1948) confirms, for centuries after its publication the algorismists (followers of the style of calculation demonstrated in Liber Abaci) remained in conflict with the abacists (traditionalists who continued to use the abacus in conjunction with Roman numerals). The second version of Liber Abaci was dedicated to Michael Scot in 1227 CE. No copies of the first version are known to exist.
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date of publication: 1202
genre: essay

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