It is proved that, under the Martin's Axiom, every $T_1$-space with countable tightness is a subspace of some pseudo-radial space. We also give several characterizations of subspaces of pseudo-radial spaces and conclude that being a subspace of a pseudo-radial space is a local property.
@article{118615,
author = {Jin Yuan Zhou},
title = {On subspaces of pseudo-radial spaces},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {34},
year = {1993},
pages = {583-586},
zbl = {0796.54011},
mrnumber = {1243090},
language = {en},
url = {http://dml.mathdoc.fr/item/118615}
}
Zhou, Jin Yuan. On subspaces of pseudo-radial spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 34 (1993) pp. 583-586. http://gdmltest.u-ga.fr/item/118615/
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