Ingmar Lehmann

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Books by Ingmar Lehmann

A Biography of the World's Most Mysterious Number

By Alfred S. Posamentier and Ingmar Lehmann

Afterword by Herbert A. Hauptman

In this delightful layperson's introduction to one of math's most interesting phenomena, Drs. Posamentier and Lehmann review pi's history from prebiblical times to the 21st century, the many amusing and mind-boggling ways of estimating pi over the centuries, quirky examples of obsessing about pi,...

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