Paper $14.00 ISBN: 9780226199955 Published October 2007
Cloth $28.00 ISBN: 9780226199948 Published October 2006

The Best of All Possible Worlds

Mathematics and Destiny

Ivar Ekeland

The Best of All Possible Worlds

Ivar Ekeland

208 pages | 17 halftones, 10 line drawings | 6 x 9 | © 2006
Paper $14.00 ISBN: 9780226199955 Published October 2007
Cloth $28.00 ISBN: 9780226199948 Published October 2006

Optimists believe this is the best of all possible worlds. And pessimists fear that might really be the case. But what is the best of all possible worlds? How do we define it? Is it the world that operates the most efficiently? Or the one in which most people are comfortable and content? Questions such as these have preoccupied philosophers and theologians for ages, but there was a time, during the seventeenth and eighteenth centuries, when scientists and mathematicians felt they could provide the answer.

This book is their story. Ivar Ekeland here takes the reader on a journey through scientific attempts to envision the best of all possible worlds. He begins with the French physicist Maupertuis, whose least action principle asserted that everything in nature occurs in the way that requires the least possible action. This idea, Ekeland shows, was a pivotal breakthrough in mathematics, because it was the first expression of the concept of optimization, or the creation of systems that are the most efficient or functional. Although the least action principle was later elaborated on and overshadowed by the theories of Leonhard Euler and Gottfried Leibniz, the concept of optimization that emerged from it is an important one that touches virtually every scientific discipline today. 

Tracing the profound impact of optimization and the unexpected ways in which it has influenced the study of mathematics, biology, economics, and even politics, Ekeland reveals throughout how the idea of optimization has driven some of our greatest intellectual breakthroughs. The result is a dazzling display of erudition—one that will be essential reading for popular-science buffs and historians of science alike.

1. Keeping the Beat
2. The Birth of Modern Science
3. The Least Action Principle
4. From Computations to Geometry
5. Poincaré and Beyond
6. Pandora's Box
7. May the Best One Win
8. The End of Nature
9. The Common Good
10. A Personal Conclusion
Appendix 1. Finding the Second Diameter of a Convex Table
Appendix 2. The Stationary Action Principle for General Systems
Bibliographical Notes

Review Quotes
Freeman Dyson | New York Review of Books
"A run through the history of the last four hundred years, seen through the eyes of a French mathematician. Mathematics appears as a unifying principle for history. Ekeland moves easily from mathematics to physics, biology, ethics, and philosophy."
"[Readers] will not regret a minute spent reading this book. This intelligent, eloquent, very accessible work will make new connections for virtually every reader. Ekeland is clearly a master teacher. Essential."
Hector Sussmann | Notice of the AMS
"A book that provides much information about the ideas of optimization and critical points and is full of details about a large cast of characters. . . .The book can be savored in bits and pieces. . . . But the reader who just chooses to start on page one and keep going will almost certainly find it impossible to put the book down, because it is densely packed with delightful items of information and is as entertaining as a fast-moving thriller."

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