Pythagorean means

A geometric construction of the quadratic mean and the Pythagorean means (of two numbers a and b). Harmonic mean denoted by   H, geometric by   G, arithmetic by   A and quadratic mean (also known as root mean square) denoted by   Q.
Comparison of the arithmetic, geometric and harmonic means of a pair of numbers. The vertical dashed lines are asymptotes for the harmonic means.

In mathematics, the three classical Pythagorean means are the arithmetic mean (AM), the geometric mean (GM), and the harmonic mean (HM). These means were studied with proportions by Pythagoreans and later generations of Greek mathematicians[1] because of their importance in geometry and music.

  1. ^ Heath, Thomas. History of Ancient Greek Mathematics.

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