Geodesic
Preservation of properties of a map by forcing
Commentationes Mathematicae Universitatis Carolinae, Tome 63 (2022) no. 1, pp. 121-129.

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Let $f\colon X\to Y$ be a continuous map such as an open map, a closed map or a quotient map. We study under what circumstances $f$ remains an open, closed or quotient map in forcing extensions.
DOI : 10.14712/1213-7243.2021.029
Classification : 54A35, 54C10
Keywords: forcing; open map; closed map; quotient map 
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Iwasa, Akira. Preservation of properties of a map by forcing. Commentationes Mathematicae Universitatis Carolinae, Tome 63 (2022) no. 1, pp. 121-129. doi : 10.14712/1213-7243.2021.029. http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2021.029/

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