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标题：On <svg style="vertical-align:-0.234pt;width:13.75px;" id="M1" height="10.0125" version="1.1" viewBox="0 0 13.75 10.0125" width="13.75" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.0125)"> <g transform="translate(72,-63.99)"> <text transform="matrix(1,0,0,-1,-71.95,64.27)"> <tspan style="font-size: 17.93px; " x="0" y="0">𝜋</tspan> </text> </g> </g> </svg>-Images of Locally Separable Metric Spaces
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作者：Tran Van An ; Nguyen Van Dung
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：2008
卷号：2008
DOI：10.1155/2008/145683
出版社：Hindawi Publishing Corporation
摘要：We characterize 𝜋-images of locally separable metric spaces by means of covers having 𝜋-property. As its application, we obtain characterizations of compact-covering (sequence-covering, pseudo-sequence-covering, and sequentially quotient) 𝜋-images of locally sparable metric spaces.