Weakly bisequential spaces were introduced by A.V. Arhangel'skii [1], in this paper. We discuss the relations between weakly bisequential spaces and metric spaces, countably bisequential spaces, Fréchet-Urysohn spaces.
@article{119194, author = {Chuan Liu}, title = {On weakly bisequential spaces}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {41}, year = {2000}, pages = {611-617}, zbl = {1038.54004}, mrnumber = {1795090}, language = {en}, url = {http://dml.mathdoc.fr/item/119194} }
Liu, Chuan. On weakly bisequential spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 41 (2000) pp. 611-617. http://gdmltest.u-ga.fr/item/119194/
Bisequential spaces, tightness of products, and metrizability conditions in topological groups, Trans. Moscow Math. Soc. 55 (1994), 207-219. (1994) | MR 1468459
The frequency spectrum of a topological space and the product operation, Trans. Moscow Math. Soc. 40 (1981), 163-200. (1981)
Spaces determined by point-countable covers, Pacific J. Math. 113 (1984), 303-332. (1984) | MR 0749538 | Zbl 0561.54016
A characterization of closed images of metric spaces, Proc. Amer. Math. Soc. 95 (1985), 487-490. (1985) | MR 0806093 | Zbl 0592.54027
$\aleph$-spaces and spaces with $\sigma$-hereditarily closure-preserving k-network, Topology Appl. 30 (1990), 209-215. (1990) | MR 1173260
Mapping theorems on $\aleph$-spaces, Topology Appl. 30 (1988), 159-164. (1988) | MR 0967752 | Zbl 0663.54017
A quintuple quotient quest, Topology Appl. 2 (1972), 91-138. (1972) | MR 0309045 | Zbl 0238.54009
A compact Fréchet space whose square is not Fréchet, Comment. Math. Univ. Carolinae 21 (1980), 749-753. (1980) | MR 0597764 | Zbl 0466.54022
Quasi- and weakly-quasi-first-countable space, Topology Appl. 11 (1980), 223-230. (1980) | MR 0572376