Download Euclid—The Creation of Mathematics by Benno Artmann PDF

By Benno Artmann

This e-book is for all fanatics ofmathematics. it really is an try to less than­ stand the character of arithmetic from the perspective of its most vital early resource. whether the cloth coated by way of Euclid will be thought of ele­ mentary for the main half, the best way he offers it has set the normal for greater than thousand years. understanding Euclid's parts should be ofthe related significance for a mathematician this day as figuring out Greek structure is for an architect. sincerely, no con­ transitority architect will build a Doric temple, not to mention set up a building website within the method the ancients did. yet for the educational ofan architect's aesthetic judgment, a data ofthe Greek her­ itage is necessary. I trust Peter Hilton while he says that real arithmetic constitutesone ofthe best expressions ofthe human spirit, and that i may well upload that right here as in such a lot of different situations, now we have realized that language ofexpression from the Greeks. whereas offering geometry and mathematics Euclid teaches us es­ sential positive aspects of arithmetic in a way more basic feel. He monitors the axiomatic beginning of a mathematical conception and its awake improvement in the direction of the answer of a particular challenge. We see how abstraction works and enforces the strictly deductive presentation ofa idea. We study what inventive definitions are and v VI ----=P:. . :re:. ::::fa=ce how a conceptual clutch results in toe category ofthe proper ob­ jects.

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Extra info for Euclid—The Creation of Mathematics

Sample text

Most ofthe following definitions are abbreviations in the modern manner, for instance: Definitions trilateral figures are those contained by three straight Def. 19. lines ... Def. 20. Of trilateral figures, an equilateral triangle is that which has its three sides equal, an isosceles triangle which has two of its sides alone equal, and a scalene triangle that which has its three sides unequal. 2. Definitions and Axioms 19 In a modern formal sense, an equilateral triangle is isosceles as well, but not so for Euclid.

In any triangle two angles taken together in any manner are less than two right angles. 19 is its converse. These propositions lead to Prop. 20. In any triangle two sides taken together in any manner are greater than the remaining one. This is the famous triangle inequality. Proclus comments on this: The Epicureans are want to ridicule this theorem, say it is evident even to an ass and needs no proof ... they make [this] out from the observation that, ifhay is placed at one extremity of the sides, an ass in quest of provender will make his way along the one side and not by way of the two others.

Historians have said that this interpretation is not justified and an anachronism. Mathematicians have replied that the formulas represent an isomorphic image of the geometric situation and hence are the correct modern way of describing Euclid's procedures. The same problem arises again in Book VI, where the geometric equivalent of quadratic equations is treated. Because the geometric version is quite sufficient for the understanding of Euclid's text, we will leave the formulas aside. Occasionally we will use them in order to facilitate understanding for the modern reader.

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