A function is a rule that is applied to one set of values to give another set of values. A function can be illustrated on a graph – points are plotted as coordinates and joined by either a straight ...
SIAM Journal on Applied Mathematics, Vol. 27, No. 1 (Jul., 1974), pp. 131-137 (7 pages) A necessary condition and a sufficient condition for the pseudo-convexity of a function are given. These ...
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