e^{iπ}+1=0
Supposedly discovered by Leonard Euler in the 18th century, the equation e^{iπ}+1=0 is considered to be the greatest equation in mathematics. Why? Because it links the five best known constants in mathematics:
 e is the base of natural logarithms
 i is the square root of 1
 π is the ratio of a circle's circumference to its diameter
 0 is the additive identity
 1 is unity and the multiplicative identity
Now, conveniently, different authors have written full books about each of these numbersexcept for 1filled with their histories, multiple uses, and associated trivia. The books are as follows:
So, my final question: Who is going to write the book about 1?
