A global maximum, also known as an absolute maximum, the largest overall value of a set, function, etc., over its entire range. It is impossible to construct an algorithm that will find a global maximum for an arbitrary function.
Global Maximum
See also
Global Minimum, Local Maximum, MaximumExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Global Maximum." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/GlobalMaximum.html