Download An Axiomatic Approach to Geometry: Geometric Trilogy I by Francis Borceux PDF

By Francis Borceux

Focusing methodologically on these ancient elements which are suitable to helping instinct in axiomatic techniques to geometry, the ebook develops systematic and smooth methods to the 3 center features of axiomatic geometry: Euclidean, non-Euclidean and projective. traditionally, axiomatic geometry marks the starting place of formalized mathematical task. it's during this self-discipline that almost all traditionally recognized difficulties are available, the ideas of that have ended in a variety of shortly very energetic domain names of study, in particular in algebra. the popularity of the coherence of two-by-two contradictory axiomatic structures for geometry (like one unmarried parallel, no parallel in any respect, a number of parallels) has resulted in the emergence of mathematical theories in keeping with an arbitrary method of axioms, a vital function of up to date mathematics.

This is an engaging booklet for all those that educate or learn axiomatic geometry, and who're drawn to the historical past of geometry or who are looking to see an entire facts of 1 of the recognized difficulties encountered, yet no longer solved, in the course of their reviews: circle squaring, duplication of the dice, trisection of the perspective, building of normal polygons, development of types of non-Euclidean geometries, and so forth. It additionally presents 1000's of figures that help intuition.

Through 35 centuries of the heritage of geometry, become aware of the beginning and keep on with the evolution of these leading edge principles that allowed humankind to boost such a lot of facets of latest arithmetic. comprehend a number of the degrees of rigor which successively proven themselves throughout the centuries. Be surprised, as mathematicians of the nineteenth century have been, while looking at that either an axiom and its contradiction will be selected as a legitimate foundation for constructing a mathematical conception. go through the door of this marvelous international of axiomatic mathematical theories!

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Extra info for An Axiomatic Approach to Geometry: Geometric Trilogy I

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Nevertheless, when necessary, and to avoid repetition, we shall freely use these basic results in this chapter and refer the reader to the next chapter where Euclid’s systematic treatment of these matters is presented. Among the greatest challenges of Greek geometry, everybody has heard of the famous “circle squaring problem”, and probably also of the duplication of the cube and the trisection of the angle. A final (negative) answer to these problems was found more than two millenniums later! But the many unsuccessful efforts developed to try to solve these problems resulted in the discovery of a host of techniques and results which are much more important than the problems that gave rise to them, such as, for example, the theory of conics.

The author thanks the numerous collaborators who helped him, through the years, to improve the quality of his geometry courses and thus of this book. Among them, the author particularly wishes to thank Pascal Dupont , who also gave useful hints for drawing some of the illustrations, realized with Mathematica and Tikz . The Geometric Trilogy I. Some Pioneers of Greek Geometry 3. Regular Polygons II. Dual Spaces III. ​10 Let us Burn our Rulers!  Pre-Hellenic Antiquity Francis Borceux1 (1)Université catholique de Louvain, Louvain-la-Neuve, Belgium Abstract Already two millenniums before Christ, a substantial geometric knowledge exists: results like the Pythagoras or the Thales intercept theorem are known of the Egyptians or Mesopotamians, long before the Greek mathematicians provide a formal proof of these.

The Pythagoreans attributed magical virtues to some numbers and some geometric forms, in particular the “regular” forms. Some historians claim that they already knew the five regular polyhedrons: the tetrahedron (four triangles), the cube (six squares), the octahedron (eight triangles), the dodecahedron (twelve pentagons) and the icosahedron (twenty triangles). But there is no evidence of this fact. 4). It was perhaps by scrutinizing this geometric figure that Greek geometers discovered the so-called Golden section.

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