Leonardo Fibonacci was born in Pisa and was brought up in Bougie, Algeria, where his father was a warehouse official. Fibonacci traveled extensively for business and pleasure throughout Europe and in Egypt, Syria, and Greece. During his travels he observed and analyzed the arithmetical systems employed in commerce and learned the Hindu-Arabic numerals.

He popularized the use of the Arabic numerals and explained the principles of trigonometry in his Practica Geometriae thepractice of geometry. Fibonacci Considered as the first discoursing of Europe chronologically speaking and as the introducer of the Arabic numeral system, he was educated child in Algeria, where his father was a customs officer, and where he learned "the abacus, the use of the Indians".

He then had way, for commercial reasons, know everything what this science was taught in Egypt, in Syria, in Sicily and Provence. The material thus assembled gave him an order, a unit of method and clarity of teaching in the Liber Abaci book of the abacuswhich, as a model of University text, served also by its flow of examples, for the compilation of textbooks of arithmetic for use by traders.

Written in and expanded in a second editorial inthe work contains fifteen chapters; the first presents the numbering of the nine figures that Fibonacci called "pigs" and that, indeed, they are ten, because it is necessary to add the zero "quod arabice zephirum apellatur"; in the following chapters Leonardo exposes notions on the digital calculation, addition and multiplication tables, showing its use to perform four operations with figures of considerable extent, and publicizing the criteria of divisibility by two, three and up to thirteen, gathering in tablitas apropos divisions results by these numbers of some integers not exceeding In the sixth and seventh chapters is fractions of the concept and the least common multiple and applications of a "tabula disgregationis", showing the breakdown of number of ordinary fractions in fundamentals, reveals the persistence of Egyptian logistics.

The second part of the book, "Rule of Algebra", contains the formulas to recognize the second-degree equations, with demonstrations according to the old way, using geometric constructions, and numerous problems that can be solved with equations or systems of equations reducible to the second grade.

This book, which should be considered as one of the most important of that time by the influence which took on the then resurgent Western scientific knowledge, procured him the author vast fame and drew upon him the attention of Emperor Federico II, who invited him to his court.

In he gave birth practice of geometry, which contains an introduction that is linked to the fundamental propositions of Euclid, rules for measurement of lengths, areas and volumes and the division of the figures, and demonstrations of such standards, with specific applications and developments of calculation that constitute a useful complement to the earlier work.

Following the example of the Greek masters, Leonardo Pisano modeled this work in the style of the elements of Euclid, and teaching procedures to follow when you want to measure a surface or volume or divide a figure given in parts subject to proposed conditions, always accompanied his teaching with demonstrations and calculations properly developed, in order to highlight that speaks carried out research similar to those contained in the metric of Heron of Alexandria.

While this work of Fibonacci had a solely educational character, we must agree that it is one of the main geometric treaties of the middle ages. On the other hand is in the same work a middle part dedicated to an arithmetic theory of radicals square and cubic, apart from a method to square and cubic roots extraction from a given number.

It is also noted in the book of Fibonacci the exposure of the procedures devised by Archytas and Plato and Heron of Alexandria to double cube problem along with the quadrature of the circle and the trisection of the angle, vainly seduced generations of scholars.

Among other known Fibonacci texts is a commentary on the book of the elements of Euclid.

It is also known that he composed a Libro di merchatanti. It is also famous for the discovery of the so-called series of Fibonacci, whose properties include its recurrence in numerous natural organic formations.

Extracted from the website: Biography of Leonardo de Pisa [Fibonacci] Mathematician.Fibonacci (c. – c.

) was an Italian mathematician from the Republic of Pisa, considered to be "the most talented Western mathematician of the Middle Ages". The name he is commonly called, "Fibonacci" (Italian: [fiboˈnattʃi]), was made up in by the Franco-Italian historian Guillaume Libri and is short for filius Bonacci ("son of (the) Bonacci") and he is also known as Leonardo.

Leonard or Leo is a common English, German, Irish, and Dutch masculine given name and a surname.. The given name and surname originate from the Old High German Leonhard containing the prefix levon ("lion") and the suffix hardu ("brave" or "hardy"). The name has come to mean "lion strength", "lion-strong", or "lion-hearted".

It may also be from the Latin Leo ("lion"). Sep 01, · Comment: This item shows signs of wear from consistent use, but it remains in good condition and is a good working copy.

All pages and cover are intact, but may have aesthetic issues such as small tears, bends, scratches, and scuffs. Spine may also show signs of wear. Written in and expanded in a second editorial in , the work contains fifteen chapters; the first presents the numbering of the nine figures that Fibonacci called "pigs" and that, indeed, they are ten, because it is necessary to add the zero "quod arabice zephirum apellatur"; in the following chapters Leonardo exposes notions on the digital .

Aug 24, · Whether you are brand new to the Agile process or have managed Agile software development teams for years, an in-depth online reference to Agile terminology is an indispensable tool. Jul 07, · The Golden Ratio: Phi, Golden Ratio, Phi, , and Fibonacci in Math, Nature, Art, Design, Beauty and the Face.

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Leonardo Fibonacci Biography - Childhood, Life Achievements & Timeline