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More on sg-compact spaces. (English) Zbl 0989.54026
Summary: The aim of this paper is to continue the study of sg-compact spaces, a topological notion much stronger than hereditary compactness. We investigate the relations between sg-compact and $$C_2$$-spaces and the interrelations to hereditarily sg-closed sets.
##### MSC:
 54D30 Compactness 54A05 Topological spaces and generalizations (closure spaces, etc.) 54H05 Descriptive set theory (topological aspects of Borel, analytic, projective, etc. sets) 54G99 Peculiar topological spaces
##### Keywords:
sg-open set; semi-compact; $$C_2$$-space; semi-open set
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