Geodesic
Spaces with a~locally countable $sn$-network
Lobachevskii journal of mathematics, Tome 26 (2007), pp. 33-49

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In this paper, we discuss a class of spaces with a locally countable $sn$-network. We give some characterizations of this class and investigate variance and inverse invariance of this class under certain mappings.
Keywords: $sn$-network, $cs$-network, weak-base, perfectmapping, (strongly) Lindelöf mapping, finite subsequence-covering mapping. 
@article{LJM_2007_26_a4,
     author = {X. Ge},
     title = {Spaces with a~locally countable $sn$-network},
     journal = {Lobachevskii journal of mathematics},
     pages = {33--49},
     publisher = {mathdoc},
     volume = {26},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2007_26_a4/}
}
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X. Ge. Spaces with a~locally countable $sn$-network. Lobachevskii journal of mathematics, Tome 26 (2007), pp. 33-49. http://geodesic.mathdoc.fr/item/LJM_2007_26_a4/