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Imaginary Tale

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Imaginary Tale

The Story of "I" (the Square Root of Minus One)

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Paperback

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An Imaginary Tale: The Story of "I" (the Square Root of Minus One) by Paul J. Nahin
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Description

Today complex numbers have such widespread practical use--from electrical engineering to aeronautics--that few people would expect the story behind their derivation to be filled with adventure and enigma. In An Imaginary Tale, Paul Nahin tells the 2000-year-old history of one of mathematics' most elusive numbers, the square root of minus one, also known as i. He recreates the baffling mathematical problems that conjured it up, and the colorful characters who tried to solve them. In 1878, when two brothers stole a mathematical papyrus from the ancient Egyptian burial site in the Valley of Kings, they led scholars to the earliest known occurrence of the square root of a negative number. The papyrus offered a specific numerical example of how to calculate the volume of a truncated square pyramid, which implied the need for i. In the first century, the mathematician-engineer Heron of Alexandria encountered I in a separate project, but fudged the arithmetic; medieval mathematicians stumbled upon the concept while grappling with the meaning of negative numbers, but dismissed their square roots as nonsense.By the time of Descartes, a theoretical use for these elusive square roots--now called "imaginary numbers"--was suspected, but efforts to solve them led to intense, bitter debates. The notorious i finally won acceptance and was put to use in complex analysis and theoretical physics in Napoleonic times. Addressing readers with both a general and scholarly interest in mathematics, Nahin weaves into this narrative entertaining historical facts and mathematical discussions, including the application of complex numbers and functions to important problems, such as Kepler's laws of planetary motion and ac electrical circuits. This book can be read as an engaging history, almost a biography, of one of the most evasive and pervasive "numbers" in all of mathematics.

Table of Contents

List of Illustrations
Ch. 1 The Puzzles of Imaginary Numbers
Ch. 2 A First Try at Understanding the Geometry of [the square root of] -1
Ch. 3 The Puzzles Start to Clear
Ch. 4 Using Complex Numbers
Ch. 5 More Uses of Complex Numbers
Ch. 6 Wizard Mathematics
Ch. 7 The Nineteenth Century, Cauchy, and the Beginning of Complex Function Theory
App. A The Fundamental Theorem of Algebra
App. B The Complex Roots of a Transcendental Equation
App. C ([the square root of] -1)[superscript [square root of] -1] to 135 Decimal Places, and How It Was Computed
Notes
Name Index
Subject Index
Acknowledgments

Accolades

Runner-up for Choice Magazine Outstanding Reference/Academic Book Award 1999.
Runner-up for AAP/Professional and Scholarly Publishing Awards: Mathematics and Statistics 1998.

Author Biography

Paul J. Nahin is the author of many best-selling popular math books, including "Digital Dice, Chases and Escapes, Dr. Euler's Fabulous Formula, When Least Is Best, Duelling Idiots and Other Probability Puzzlers," and "Mrs. Perkins's Electric Quilt" (all Princeton). He is professor emeritus of electrical engineering at the University of New Hampshire.
Release date NZ
January 2nd, 2007
Author
Country of Publication
United States
Edition
New edition
Illustrations
47 line illus. 1 halftone.
Imprint
Princeton University Press
Pages
296
Dimensions
152x229x20
ISBN-13
9780691127989
Product ID
2071341

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