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@article{Nessah2013ExistenceOS, title={Existence of Solution of Minimax Inequalities, Equilibria in Games and Fixed Points Without Convexity and Compactness Assumptions}, author={Rabia Nessah and Guoqiang Tian}, journal={J. Optimization Theory and Applications}, year={2013}, volume={157}, pages={75-95} }

- Published 2013 in J. Optimization Theory and Applications
DOI:10.1007/s10957-012-0176-5

This paper characterizes the existence of equilibria in minimax inequalities without assuming any form of quasiconcavity of functions and convexity or compactness of choice sets. A new condition, called “local dominatedness property”, is shown to be necessary and further, under some mild continuity condition, sufficient for the existence of equilibrium. We then apply the basic result obtained in the paper to generalize the existing theorems on the existence of saddle points, fixed points, and… CONTINUE READING