Title of article :
Separating sets by upper semicontinuous and Darboux upper semicontinuous functions
Author/Authors :
SZCZUKA، EWA نويسنده Department of Plant Anatomy and Cytology, Maria Curie-Sk?odowska University Akademicka 19, 20-033 Lublin, Poland , , Paulina، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2013
Abstract :
In this paper we characterize the pairs ( A 0 , A 1 ) and ( A − , A + ) of disjoint sets which can be separated by an upper semicontinuous function and by a Darboux upper semicontinuous function.
Keywords :
Darboux function , Upper semicontinuous function , Urysohn Lemma , Separating sets
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications
