The Cult of Pythagoras: Math and Myths

The Cult of Pythagoras: Math and Myths

by Alberto A. Martinez

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Overview

In this follow-up to his popular Science Secrets, Alberto A. Martínez discusses various popular myths from the history of mathematics: that Pythagoras proved the hypotenuse theorem, that Archimedes figured out how to test the purity of a gold crown while he was in a bathtub, that the Golden Ratio is in nature and ancient architecture, that the young Galois created group theory the night before the pistol duel that killed him, and more. Some stories are partly true, others are entirely false, but all show the power of invention in history. Pythagoras emerges as a symbol of the urge to conjecture and “fill in the gaps” of history. He has been credited with fundamental discoveries in mathematics and the sciences, yet there is nearly no evidence that he really contributed anything to such fields at all. This book asks: how does history change when we subtract the many small exaggerations and interpolations that writers have added for over two thousand years?

The Cult of Pythagoras is also about invention in a positive sense. Most people view mathematical breakthroughs as “discoveries” rather than invention or creativity, believing that mathematics describes a realm of eternal ideas. But mathematicians have disagreed about what is possible and impossible, about what counts as a proof, and even about the results of certain operations. Was there ever invention in the history of concepts such as zero, negative numbers, imaginary numbers, quaternions, infinity, and infinitesimals?

Martínez inspects a wealth of primary sources, in several languages, over a span of many centuries. By exploring disagreements and ambiguities in the history of the elements of mathematics, The Cult of Pythagoras dispels myths that obscure the actual origins of mathematical concepts. Martínez argues that an accurate history that analyzes myths reveals neglected aspects of mathematics that can encourage creativity in students and mathematicians.

Product Details

ISBN-13: 9780822962700
Publisher: University of Pittsburgh Press
Publication date: 10/30/2012
Edition description: 1
Pages: 288
Product dimensions: 6.10(w) x 9.20(h) x 0.80(d)

About the Author

Alberto A. Martínez is associate professor of history at the University of Texas at Austin. He is the author of Science Secrets: The Truth about Darwin’s Finches, Einstein’s Wife, and Other Myths, Kinematics: The Lost Origins of Einstein's Relativity, and Negative Math: How Mathematical Rules Can Be Positively Bent.

Table of Contents

List of Myths and Apparent Myths ix

Acknowledgments xiii

Introduction xvii

1 Triangle Sacrifice to the Gods 1

2 An Irrational Murder at Sea 16

3 Ugly Old Socrates on Eternal Truth 29

4 The Death of Archimedes 43

5 Gauss, Galois, and the Golden Ratio 59

6 From Nothing to Infinity 82

7 Euler's Imaginary Mistakes 101

8 The Four of Pythagoras 113

9 The War over the Infinitely Small 134

10 Impossible Triangles 156

11 Inventing Mathematics? 181

12 The Cult of Pythagoras 201

Notes 217

Illustration Sources and Credits 257

Index 259

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