
AbstractIn the appendix to the book by F. F. Bonsal, Lectures on Some Fixed Point Theorems of Functional Analysis (Tata Institute, Bombay, 1962) a proof by Singbal of the Schauder-Tychonoff fixed point theorem, based on a locally convex variant of Schauder mapping method, is included. The aim of this note is to show that this method can be adapted to yield a proof of Kakutani fixed point theorem in the locally convex case. For the sake of completeness we include also the proof of Schauder-Tychonoff theorem based on this method. As applications, one proves a theorem of von Neumann and a minimax result in game theory.
T57-57.97, QA299.6-433, Applied mathematics. Quantitative methods, Applied Mathematics, locally convex space, upper semicontinuity, Fixed-point theorems, General theory of locally convex spaces, Applications of operator theory in optimization, convex analysis, mathematical programming, economics, Schauder mapping, Geometry and Topology, Analysis
T57-57.97, QA299.6-433, Applied mathematics. Quantitative methods, Applied Mathematics, locally convex space, upper semicontinuity, Fixed-point theorems, General theory of locally convex spaces, Applications of operator theory in optimization, convex analysis, mathematical programming, economics, Schauder mapping, Geometry and Topology, Analysis
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