Deming M. Zhuang

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A new brief proof of Fan's minimax theorem for convex-concave like functions is established using separation arguments, (a) for Xl, x 2 in X there exists x 3 in X with f(x3, y) <~ tf(x~, y) + (1-t)f(x2, y) (1) for all y in Y; and (b) for Yl, Y2 in Y there exists Y3 in Y with f(x, Y3) ~> tf(x, Yl) + (1-t)f(x, Y2) (2) for all x in X, [4]. The general form of(More)
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