A characteristic of some systems making a transition to chaos. Doubling is followed by quadrupling, etc. An example of a map displaying period doubling is the logistic map.
Period Doubling
See also
Chaos, Logistic MapExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Period Doubling." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PeriodDoubling.html