Geodesic
On weak forms of preopen and preclosed functions
Archivum mathematicum, Tome 40 (2004) no. 2, pp. 119-128.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

In this paper we introduce two classes of functions called weakly preopen and weakly preclosed functions as generalization of weak openness and weak closedness due to [26] and [27] respectively. We obtain their characterizations, their basic properties and their relationshisps with other types of functions between topological spaces.
Classification : 54A40, 54C08, 54C10, 54D10
Keywords: preopen sets preclosed sets; weakly preclosed functions; extremally disconnected spaces; quasi H-closed spaces 
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     author = {Caldas, Miguel and Navalagi, Govindappa},
     title = {On weak forms of preopen and preclosed functions},
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Caldas, Miguel; Navalagi, Govindappa. On weak forms of preopen and preclosed functions. Archivum mathematicum, Tome 40 (2004) no. 2, pp. 119-128. http://geodesic.mathdoc.fr/item/ARM_2004__40_2_a1/