Characterizations of $z$-Lindelöf spaces
Archivum mathematicum, Tome 53 (2017) no. 2, pp. 93-99.

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A topological space $(X, \tau )$ is said to be $z$-Lindelöf  [1] if every cover of $X$ by cozero sets of $(X,\tau )$ admits a countable subcover. In this paper, we obtain new characterizations and preservation theorems of $z$-Lindelöf spaces.
DOI : 10.5817/AM2017-2-93
Classification : 54C05, 54C08, 54C10
Mots-clés : cozero set; $\omega $-open set; Lindelöf; $z$-Lindelöf 
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     author = {Al-Omari, Ahmad and Noiri, Takashi},
     title = {Characterizations of $z${-Lindel\"of} spaces},
     journal = {Archivum mathematicum},
     pages = {93--99},
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Al-Omari, Ahmad; Noiri, Takashi. Characterizations of $z$-Lindelöf spaces. Archivum mathematicum, Tome 53 (2017) no. 2, pp. 93-99. doi : 10.5817/AM2017-2-93. https://geodesic-test.mathdoc.fr/articles/10.5817/AM2017-2-93/

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