Open AccessSemi-continuous function versions of Urysohn Lemma
Author(s) -
Li-Hong Xie
Publication year - 2012
Publication title -
filomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 34
eISSN - 2406-0933
pISSN - 0354-5180
DOI - 10.2298/fil1206115x
Subject(s) - mathematics , lemma (botany) , function (biology) , pure mathematics , arithmetic , discrete mathematics , ecology , poaceae , evolutionary biology , biology
Some characterizations of semi-stratifiable and k-semi-stratifiable spaces in terms of semicontinuous functions, analogous to Urysohn Lemma, were established in this paper. Some applications of them in the insertion of functions are given as well.
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