Extremal balleans
A ballean (or coarse space) is a set endowed with a coarse structure. A ballean X is called normal if any two asymptotically disjoint subsets of X are asymptotically separated. We say that a ballean X is ultra-normal (extremely normal) if any two unbounded subsets of X are not asymptotically disjoi...
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Format: | Article |
Language: | English |
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Universitat Politècnica de València
2019-04-01
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Series: | Applied General Topology |
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Online Access: | https://polipapers.upv.es/index.php/AGT/article/view/11260 |