Articles with "topological sphere" as a keyword



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Minimal volume invariants, topological sphere theorems and biorthogonal curvature on 4-manifolds

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Published in 2018 at "Mathematische Nachrichten"

DOI: 10.1002/mana.201700041

Abstract: The goal of this article is to establish estimates involving the Yamabe minimal volume, mixed minimal volume and some topological invariants on compact 4-manifolds. In addition, we provide topological sphere theorems for compact submanifolds of… read more here.

Keywords: volume; invariants topological; volume invariants; sphere theorems ... See more keywords
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Semi-separation axioms of the infinite Khalimsky topological sphere

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Published in 2020 at "Topology and its Applications"

DOI: 10.1016/j.topol.2019.107006

Abstract: Abstract In this paper we denote by ( ( Z 2 ) ⁎ , ( κ 2 ) ⁎ ) the Alexandroff one point compactification of the Khalimsky (K-, brevity) plane. We often call this… read more here.

Keywords: space; semi separation; topological sphere; separation axioms ... See more keywords