The semi-T 3 -separation axiom of Khalimsky topological spaces
Filomat, Tome 37 (2023) no. 8, p. 2539

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The paper initially studies both the s-T 3-separation and the semi-T 3-separation axiom of Khalim-sky (K-for brevity) topological spaces. To do this work, first we investigate some properties of semi-open and semi-closed sets with respect to the operations of union or intersection and further, a homeomorphism, and a semi-homeomorphism. Next, we study various properties of semi-topological properties of K-topological spaces such as simple K-paths. Finally, after introducing the notion of a semi-T 3-separation axiom which is broader than the s-T 3-separation axiom, we find a sufficient and necessary condition for a Khalimsky topological space to satisfy the semi-T 3-separation axiom.
DOI : 10.2298/FIL2308539H
Classification : 54A05, 54D10, 54F05, 54C08, 54C10, 54F65
Keywords: Semi-open, semi-closed, semi-T3-space, s-T3-space, Alexandroff space, semi-regular, semi-T1-space, semi-T2-space, Khalimsky topology, semi-homeomorphism, s-regular, semi-regular
Sang-Eon Han; Selmä Ozçag. The semi-T 3 -separation axiom of Khalimsky topological spaces. Filomat, Tome 37 (2023) no. 8, p. 2539 . doi: 10.2298/FIL2308539H
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     author = {Sang-Eon Han and Selm\"a Oz\c{c}ag},
     title = {The {semi-T} 3 -separation axiom of {Khalimsky} topological spaces},
     journal = {Filomat},
     pages = {2539 },
     year = {2023},
     volume = {37},
     number = {8},
     doi = {10.2298/FIL2308539H},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2308539H/}
}
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