[seqfan] Benjamin Peirce on e^(i pi)

Jon Awbrey jawbrey at att.net
Sat Mar 20 18:54:06 CET 2010

Note on e^(i pi) = -1

Benjamin Peirce apparently liked this mathematical synonym
for the additive inverse of 1 so much that he introduced
three special symbols for e, i, pi —- ones that enable
e^(i pi) to be written in a single cursive ligature,
as shown here:


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