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关于w~*-有界集为强有界的条件的注记
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作者 丘京辉 《苏州大学学报(自然科学版)》 CAS 1989年第2期204-205,共2页
文[1]给出了下述定理(见[1],定理1):设E为局部凸空间,则每个σ(E′,E)-有界集为β(E′,E)-有界当且仅当E为速完备。本文将指出这定理是错误的。诚然,由E为速完备可推出每个σ(E′,E)-有界集为β(E′,E)-有界,但是下述两个例子表明其逆... 文[1]给出了下述定理(见[1],定理1):设E为局部凸空间,则每个σ(E′,E)-有界集为β(E′,E)-有界当且仅当E为速完备。本文将指出这定理是错误的。诚然,由E为速完备可推出每个σ(E′,E)-有界集为β(E′,E)-有界,但是下述两个例子表明其逆不真。 展开更多
关键词 局部凸空间 空间 速完备空间
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Quasi Fast Completeness and Inductive Limits of Webbed Spaces
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作者 丘京辉 《Journal of Mathematical Research and Exposition》 CSCD 1998年第1期55-59,共5页
Let (E,ζ)= indlim (E n ,ζ n ) be an inductive limit of locally convex spaces. We say that ( DST ) holds if each bounded set in (E,ζ) is contained and bounded in some (E n ,ζ n ). We introdu... Let (E,ζ)= indlim (E n ,ζ n ) be an inductive limit of locally convex spaces. We say that ( DST ) holds if each bounded set in (E,ζ) is contained and bounded in some (E n ,ζ n ). We introduce a property which is weaker than fast completeness, quasi-fast completeness, and prove that for inductive limits of strictly webbed spaces, quasi-fast completeness implies that ( DST ). By using De Wilde’s theory on webbed spaces,we also give some other conditions for ( DST ). These results improve relevant earlier results. 展开更多
关键词 locally convex spaces inductive limits webbed spaces.
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