The Evolution of the Euclidean Elements A Study of the Theory of Incommensurable Magnitudes and Its Significance for Early Greek Geometry

The present work has three principal objectives: (1) to fix the chronology of the development of the pre-Euclidean theory of incommensurable magnitudes beginning from the first discoveries by fifth-century Pythago­ reans, advancing through the achievements of Theodorus of Cyrene, Theaetetus, Archyta...

Full description

Bibliographic Details
Main Author: Knorr, W.R.
Format: eBook
Language:English
Published: Dordrecht Springer Netherlands 1975, 1975
Edition:1st ed. 1975
Series:Synthese Historical Library
Subjects:
Online Access:
Collection: Springer Book Archives -2004 - Collection details see MPG.ReNa
Table of Contents:
  • I / Introduction
  • I. The Pre-Euclidean Theory of Incommensurable Magnitudes
  • II. General Methodological Observations
  • III. Indispensable Definitions
  • II / The Side and the Diameter of the Square
  • I. The Received Proof of the Incommensurability of the Side and Diameter of the Square
  • II. Anthyphairesis and the Side and Diameter
  • III. Impact of the Discovery of Incommensurability
  • IV. Summary of the Early Studies
  • III / Plato’s Account of the Work Of Theodorus
  • I. Formulation of the Problem: ????µ???
  • II. The Role of Diagrams: ???????
  • III. The Ideal of Demonstration: ??????????
  • IV. Why Separate Cases?
  • V. Why Stop at Seventeen?
  • VI. The Theorems of Theaetetus
  • VII. Theodoras’ Style of Geometry
  • VIII. Summary of Interpretive Criteria
  • IV / A Critical Review of Reconstructions of Theodorus’ Proofs
  • I. Reconstruction via Approximation Techniques
  • II. Algebraic Reconstruction
  • III. Anthyphairetic Reconstruction
  • V / The Pythagorean Arithmetic of the Fifth Century
  • I. Pythagorean Studies of the Odd and the Even
  • II. The Pebble-Representation of Numbers
  • III. The Pebble-Methods Applied to the Study of the Odd and the Even
  • IV. The Theory of Figured Numbers
  • V. Properties of Pythagorean Number Triples
  • VI / The Early Study of Incommensurable Magnitudes: Theodorus
  • I. Numbers Represented as Magnitudes
  • II. Right Triangles and the Discovery of Incommensurability
  • III. The Lesson of Theodorus
  • IV. Theodorus and Elements II
  • VII / The Arithmetic of Incommensurability: Theaetetus and Archytas
  • I. The Theorem of Archytas on Epimoric Ratios
  • II. The Theorems of Theaetetus
  • III. The Arithmetic Proofs of the Theorems of Theaetetus
  • IV. The Arithmetic Basis of Theaetetus’ Theory
  • V. Observations on Pre-EuclideanArithmetic
  • VIII / The geometry of incommensurability: Theaetetus and Eudoxus
  • I. The Theorems of Theaetetus: Proofs of the Geometric Part
  • II. Anthyphairesis and the Theory of Proportions
  • III. The Theory of Proportions in Elements X
  • IV. Theaetetus and Eudoxus
  • V. Summary of the Development of the Theory of Irrationals
  • IX / Conclusions and Syntheses
  • I. The Pre-Euclidean Theory of Incommensurable Magnitudes
  • II. The Editing of the Elements
  • III. The Pre-Euclidean Foundations-Crises
  • Appendices
  • A. On the Extension of Theodoras’ Method
  • B. On the Anthyphairetic Proportion Theory
  • A List of the Theorems in Chapters V-VIII and the Appendices
  • Referencing Conventions and Bibliography
  • I. Referencing Conventions
  • II. Abbreviations used in the Notes and the Bibliography
  • III. Bibliography of Works Consulted: Ancient Authors
  • IV. Modern Works: Books
  • V. Modern Works: Articles
  • Index of Names
  • Index of Passages Cited from Ancient Works