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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Then the Diederich-Forn?ss exponent can be chosen arbitrarily close to 1, and the closure of Ω admits a Stein neighborhood basis.
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In this paper, we show that a compact real surface embedded in a complex surface has a regular Stein neighborhood basis, provided that there are only finitely many complex points on the surface, and that they are all flat and hyperbolic.
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The group G is locally quasi-convex if it has a neighborhood basis of the neutral element 0, given by quasi-convex sets.
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This program was developed so that traffic calming would be considered on a comprehensive neighborhood basis.
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| | Firstly, some known equivalent definitions of topology space are introduced, and the proofs of equivalent definitions with closed set and interior are supplemented. Then, two new equivalent definitions are presented in terms of exterior and neighborhood basis. Finally, two contrary examples are given to indicate that derived set and set of independent points can not define topology space. | | 归纳总结了已有拓扑空间的等价定义,补充了由闭集和内部定义拓扑的证明,并利用外部及邻域基给 出了拓扑空间的两个等价定义,最后给出两个例子分别说明导集和孤立点集不能定义拓扑空间. | | 文摘来源 | |   |
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