This paper points out that the mathematical result of the corollary of the saddle point theorem is incorrect,and further are discussed the conditions about the existence of the saddle point.
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周茂堂,杨向东.关于鞍点定理及其推论[J].国防科技大学学报,1986,(1):133-137. Zhou Maotang, Yang Xiangdong. About Saddle Point Theorem and Its Corollary[J]. Journal of National University of Defense Technology,1986,(1):133-137.