Definition:Harmonic Series

Theorem
The series defined as:
 * $\displaystyle \sum_{n \mathop = 1}^\infty \frac 1 n = 1 + \frac 1 2 + \frac 1 3 + \frac 1 4 + \cdots$

is known as the harmonic series.

Also see

 * Definition:Harmonic Numbers
 * Definition:General Harmonic Numbers