X. Ge, “Spaces with a locally countable $sn$-network”, Lobachevskii J. Math., 2007, том 26,страницы 33

Spaces with a locally countable $sn$-network

X. Ge

Soochow University

Аннотация: 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.

Ключевые слова: $sn$-network, $cs$-network, weak-base, perfectmapping, (strongly) Lindelöf mapping, finite subsequence-covering mapping.

Представлено: М. А. Малахальцев
Поступило: 12.05.2007

Язык публикации: английский