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A countably paracompact nonnormal space. (English) Zbl 0437.54027


MSC:

54G20 Counterexamples in general topology
54D65 Separability of topological spaces
54D20 Noncompact covering properties (paracompact, Lindelöf, etc.)
54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.)
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[1] Eric K. van Douwen, A technique for constructing honest locally compact submetrizable examples, Topology Appl. 47 (1992), no. 3, 179 – 201. · Zbl 0770.54026 · doi:10.1016/0166-8641(92)90029-Y
[2] -, Hausdorff gaps and a nice countably paracompact non-normal space, Topology Proceedings 1 (1976), 239-242. · Zbl 0406.54018
[3] I. Juhász, K. Kunen, and M. E. Rudin, Two more hereditarily separable non-Lindelöf spaces, Canad. J. Math. 28 (1976), no. 5, 998 – 1005. · Zbl 0336.54040 · doi:10.4153/CJM-1976-098-8
[4] A. J. Ostaszewski, On countably compact, perfectly normal spaces, J. London Math. Soc. (2) 14 (1976), no. 3, 505 – 516. · Zbl 0348.54014 · doi:10.1112/jlms/s2-14.3.505
[5] J. E. Vaughan, A countably compact, first countable, nonnormal \?\(_{2}\)-space, Proc. Amer. Math. Soc. 75 (1979), no. 2, 339 – 342. · Zbl 0412.54023
[6] Michael L. Wage, Non-normal spaces, Set-theoretic topology (Papers, Inst. Medicine and Math., Ohio Univ., Athens, Ohio, 1975-1976) Academic Press, New York, 1977, pp. 371 – 381.
[7] M. L. Wage, W. G. Fleissner, and G. M. Reed, Normality versus countable paracompactness in perfect spaces, Bull. Amer. Math. Soc. 82 (1976), no. 4, 635 – 639. · Zbl 0332.54018
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