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检索条件"主题词=Upper semicontinuous Multifunction"
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On a Fixed Point Theorem of Ky Fan
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Acta Mathematica Sinica,English Series 2002年 第2期18卷 363-374页
作者: DE BLASI Francesco S. GEORGIEV Pando Gr. Department of Mathematics.University of Roma Ⅱ'Tor Vergata.Via della Ricerca Scientifica.00133 Roma.Italy Department of Mathematics and Informatics SofiaUniversity"St.Kl.Ohridski"5 James Bourchier Blvd.1126 Sofia.Bulgaria and Laboratory for Advanced Brain Signal Processing.Brain Science Institute.The Institute of Physical and Chemical Research(RIKEN)2-1HirosawaWako-shiSaitama.351-0198.Japan
We generalize a theorem of Ky Fan about the nearest distance between a closed convex set D in a Banach space E and its image by a function f:D→E,in several directions:(1)for noncompact sets *** f(D)precompact:(2)for ... 详细信息
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