| D_1 Spaces and Their Metrization |
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| 作者单位： | Department of Mathematics，Guangxi University，Nanning，530004 |
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| 摘 要： | Ｄ_１ Ｓｐａｃｅｓ ａｎｄ Ｔｈｅｉｒ ＭｅｔｒｉｚａｔｉｏｎＤａｉＭｕｍｉｎ（戴牧民）；ＬｉｕＣｈｕａｎ（刘川）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＧｕａｎｇｘｉＵｎｉｖｅｒｓｉｔｙ，Ｎａｎｎｉｎｇ，５３０００４）Ａｂｓｔｒａｃｔ：?..
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| 关 键 词： | D1 Space M Space Perfectly Normal wγ Space Space Metrization |
D_1 Spaces and Their Metrization |
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| Authors: | Dai Mumin Liu Chuan |
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| Abstract: | This paper is devoted to Aull's D1 spaces, i. e., spaces in which every ciooed subset has a Countable led be. The charaterizetion. covering properties and the metrization of D1 spaces are considered. Some open questions are raised in the end of the paper. |
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