标题：KKM theorem with applications to lower and upper bounds equilibrium problem in <mml:math alttext="$G$" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>G</mml:mi></mml:math>-convex spaces
期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：2003
卷号：2003
DOI：10.1155/S0161171203211261
出版社：Hindawi Publishing Corporation
摘要：We give some new versions of KKM theorem
for generalized convex spaces. As an application, we answer a
question posed by Isac et al. (1999) for the lower and upper
bounds equilibrium problem.
