A function defined on a subset is said to be pseudoconcave if is pseudoconvex.
Pseudoconcave Function
See also
Pseudoconvex FunctionThis entry contributed by Christopher Stover
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References
Borwein, J. and Lewis, A. Convex Analysis and Nonlinear Optimization: Theory and Examples. New York: Springer Science+Business Media, 2006.Cite this as:
Stover, Christopher. "Pseudoconcave Function." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/PseudoconcaveFunction.html