Saddle point theorems |
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Authors: | T Radzik |
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Institution: | 1. Institute of Mathematics, Technical University, 50-370 Wroclaw, Wybrzeze Wyspianskiego 27, Poland
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Abstract: | This paper considers three classes of matrices in terms of the existence ofsaddle points. The classes are described by conditions which are very closely related to the property ofquasi-concavity-convexity of functions of two variables. For the matrices in those classes, necessary and sufficient conditions for the existence of saddle points have been found. |
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