A function which has infinitely many derivatives at a point. If a function is not polygenic, it is monogenic.
Polygenic Function
See also
Monogenic FunctionExplore with Wolfram|Alpha
References
Newman, J. R. The World of Mathematics, Vol. 3. New York: Dover, p. 2003, 2000.Referenced on Wolfram|Alpha
Polygenic FunctionCite this as:
Weisstein, Eric W. "Polygenic Function." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PolygenicFunction.html