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Dr. Euler's Fabulous Formula by Paul J. Nahin

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Prefaceto the Paperback Edition

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Finally I meet my imaginary part!

—Nobel Prize-winning (1989) experimental physicist Wolfgang Paul upon meeting the Nobel Prize-winning (1945) theoretical physicist Wolfgang Pauli (this joke makes sense once you remember the structure of a complex number and that image

−1 = e,

Proves that Euler was a sly guy.

But ζ (2)

Was totally new

And raised respect for him sky-high.

—William C. Waterhouse, professor of mathematics ...

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