Displaying similar documents to “Convex Sets and Convex Combinations on Complex Linear Spaces”

On zeros and fixed points of multifunctions with non-compact convex domains

Sehie Park, Jong Sook Bae (1993)

Commentationes Mathematicae Universitatis Carolinae

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Using our own generalization [7] of J.C. Bellenger’s theorem [1] on the existence of maximizable u.s.cq̇uasiconcave functions on convex spaces, we obtain extended versions of the existence theorem of H. Ben-El-Mechaiekh [2] on zeros for multifunctions with non-compact domains, the coincidence theorem of S.H. Kum [5] for upper hemicontinuous multifunctions, and the Ky Fan type fixed point theorems due to E. Tarafdar [13].