Tkachenko, M. G. Some conditions that imply compactness in countably-compact spaces. (English. Russian original) Zbl 0485.54015 Russ. Math. Surv. 36, No. 1, 256-257 (1981); translation from Usp. Mat. Nauk 36, No. 1(21), 229-230 (Russian) (1981); and Soobshch. Akad. Nauk Gruz. SSR 101, 281-284 (1981). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 54D30 Compactness 54B05 Subspaces in general topology 54C20 Extension of maps 54A25 Cardinality properties (cardinal functions and inequalities, discrete subsets) 54D55 Sequential spaces Keywords:countably-compact space; t-refinable spaces; pseudo-lacy space; left space; symmetrizable space; Q-space; t-ordered spaces; countable pseudo- character; countable tightness PDF BibTeX XML Cite \textit{M. G. Tkachenko}, Russ. Math. Surv. 36, No. 1, 256--257 (1981; Zbl 0485.54015); translation from Usp. Mat. Nauk 36, No. 1(21), 229--230 (Russian) (1981); and Soobshch. Akad. Nauk Gruz. SSR 101, 281--284 (1981) Full Text: DOI