晏妮
(貴州工程應(yīng)用技術(shù)學(xué)院理學(xué)院,貴州 畢節(jié) 551700)
關(guān)于“線性空間中集合相對(duì)內(nèi)部性質(zhì)成立的條件”注記
晏妮
(貴州工程應(yīng)用技術(shù)學(xué)院理學(xué)院,貴州畢節(jié)551700)
指出“線性空間中集合相對(duì)內(nèi)部性質(zhì)成立的條件”中的命題4是錯(cuò)誤的,并以Banach空間和連續(xù)函數(shù)空間中的例子說明閉集的仿射包不一定是閉集。
閉集;閉包;仿射包;空間;收斂;相對(duì)拓?fù)鋬?nèi)部
此命題是不成立的,下面我們舉例說明閉集的仿射包不一定為閉集。
由引理3.1與3.2我們得出
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Notes on Conditions Assuring Properties of the Relative Interior of Sets in a Linear Space
YAN Ni
(School of Science,Guizhou University of Engineering Science,Bijie,Guizhou 551700,China)
This paper notices that the Proposition4 of the paper conditions assuring properties of the rela?tive interior of sets in a linear space is incorrect,and examples of Banach space and the continuous function space in this article illustrating that closed aggregate's affine hull is not necessarily a closed aggregate.
Closed Aggregate Closure;Affine Hull;Space;Convergent Sequence;Relative;Topological Interior
O174.13
A
2096-0239(2016)02-0144-06
(責(zé)編:彭麟淋責(zé)校:明茂修)
2015-08-21
晏妮(1974-),女,貴州納雍人,貴州工程應(yīng)用技術(shù)學(xué)院理學(xué)院講師。研究方向:最優(yōu)化原理。