The smallest for which a point is a periodic point of a function so that . For example, for the function , all points have period 2 (including ). However, has a least period of 1. The analogous concept exists for a periodic sequence, but not for a periodic function. The least period is also called the exact period.
Least Period
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Cite this as:
Weisstein, Eric W. "Least Period." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LeastPeriod.html