Euler's identity

Euler's identity links five fundamental constants in one equation, showing that raising Euler's number to the power of i times pi and adding one gives zero. It is a special case of Euler's formula and is often cited as an example of mathematical beauty.

e^{i\pi} + 1 = 0

What the symbols mean

Euler's number, the base of the natural logarithm (approximately 2.71828)
The imaginary unit, defined by i^2 = -1
Pi, the ratio of a circle's circumference to its diameter (approximately 3.14159)

About this formula

  • FieldMathematics
  • TopicComplex numbers
  • LevelHigh school
  • Also calledEuler's equation, euler identity complex exponential, e to the i pi plus one equals zero, Euler's formula special case
  • SourceWikidata Q204819

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