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Apollonius of Perga, (born c. bc, Perga, Pamphylia, Anatolia—died c. , Alexandria, Egypt), mathematician, known by his contemporaries as “the Great. The Conics of Apollonius (3rd Century BCE) is the culmination of the brilliant geometrical tradition of ancient Greece. With astonishing virtuosity, and with a. Despite being generally unknown to the greats of contemporary mathematics, Apollonius’s Conics is said by Chasles to contain ‘the most interesting properties .

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Rotating a ruler around it, one discovers the distances to the section, from which the minimum and maximum can be discerned. In the preface of the second book, Apollonius mentions introducing Eudemus to a man named Philonideswhen they were all at the city of Ephesus. The geometric method of accomplishing the same result is to construct a visual square.

In that case the diameter becomes the x-axis and the vertex the origin. According ckmics Pappus, the book Tangencies De Tactionibus looked at the problem of how to describe a circle when you have three things circles, straight lines, or points in such a way so that the circle passes through the given points and touches the given circles or straight lines.

A conjugate diameter can be drawn from the centroid to bisect the chord-like lines.

Apollonius also wrote about visiting Pergamum and Ephesus. Apollonius stated that this was impossible to do without using the theorems that he had discovered. Retrieved from ” https: Apollonius, the greatest geometer of antiquity, failed to develop analytic geometry As a youth, Apollonius studied in Alexandria under the pupils of Euclid, according to Pappus and subsequently taught at the university there.

They represent the historical theories of their authors. The motion of the planets study of conic sections In conic section In analytic geometry: Gnomonics and the cone. The first four have survived in the original Greek but there is an Arabic translation of seven of the eight books. He lived in the 2nd century BC. Sources in the History of Mathematics and Physical Sciences 9. Sam Kaplan-Gershon rated it liked it Jan 06, Not every diameter has a conjugate. The ruins of the city yet stand. In the lost book Inclinations De InclinationibusApollonius wanted to demonstrate how a specific, straight line moving towards a point can be placed between two straight or circular lines.


Sometimes known as the problem of Apollonius, the most difficult case arises when the three given things are circles. A representative list of early printed editions is given below.

Apollonius of Perga – Wikipedia

In addition, for every abscissa of one must exist an abscissa in the other at the desired scale. Powers of 4 and up were ocmics visualization, requiring a degree of abstraction not available in geometry, but ready at hand in algebra. De Tactionibus embraced the following general problem: Such intellectual English giants as Edmund Halley and Isaac Newton, the proper descendants of the Hellenistic tradition of mathematics and astronomy, can only be read and interpreted in translation by populations of English speakers unacquainted with the classical languages; that is, most of them.

They are called conjugate branches. Research in such institutions, which followed the model of the Lycaeum of Aristotle at Athens, due to the residency of Alexander the Great and his companions in its northern branch, was part of the educational effort, to which the library and museum were adjunct.

Conics Books I-III

Apollonius wrote a number of books but only two of them still exist today. In modern mathematics, normals to curves are known for being the location of the center of curvature of that small part of the curve apolloniuus around the foot.


This helps set the time period when Apollonius wrote Conics. Since his son was old enough to deliver the second book to Eudemus, Apollonius must have been working around the second and third centuries.

It must pass through the vertex koruphe, “crown”. Three of the quadrants include negative coordinates meaning directions opposite the reference axes of zero. Most of the information comes from his own work where he mentions details about his life in the prefaces of the books of his only surviving major work, Conics.

No one denies, however, that Apollonius occupies some sort of intermediate niche between the grid system of conventional measurement and the fully developed Cartesian Coordinate System of Analytic Geometry.

Apoplonius use a variety of methods: The authors cite Euclid, Elements, Book III, which concerns itself with circles, and maximum and minimum distances from interior points to the circumference. He was born between the years and B.

Apollonius of Perga

De Spatii Sectione discussed a similar problem requiring the rectangle contained by the two intercepts to be equal to a given rectangle. His translation into modern English follows the Greek fairly closely. Book eight has been lost but there has been an attempt to restore it using the work of Pappus.

The Editors of Encyclopaedia Britannica. An axis is simply a straight line the cuts an object into two. Goodreads helps you keep track of books you want to read.

Alexander went on to fulfill his plan by conquering the vast Persian empire.