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Fixed points, minimax inequalities and equilibria of noncompact abstract economies. (English) Zbl 0911.47055
The author proves several fixed point theorems for multivalued maps in H-spaces. Next, by applying the fixed point theorems, some minimax inequalities and existence theorems of maximal elements for F correspondences and F -majorized correspondences in H-spaces are obtained. Finally, using the existence theorems of maximal elements, some equilibrium existence theorems for one-person games, qualitative games and noncompact abstract economies with F -majorized correspondences in H-spaces are obtained. These theorems improve and generalize most known results due to Border, Borglin-Keiding, Ding-Kim-Tan, Ding-Tan, Ding-Tarafdar, Mehta-Tarafdar, Shafer-Sonnenschein, Tan-Yuan, Tarafdar, Toussaint, Tulcea, Yannelis and Yannelis-Prabhakar, and others.

MSC:
47H10Fixed point theorems for nonlinear operators on topological linear spaces
47H04Set-valued operators
91B50General equilibrium theory in economics
47N10Applications of operator theory in optimization, convex analysis, programming, economics
91A06n-person games, n>2
91A13Games with infinitely many players