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Discrete subsets of perfectly normal spaces
1972
Proceedings of the American Mathematical Society
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Following R. W. Heath and E. A. Michael [HM], we call a topological space perfect if each of its closed subsets is a Gô. In this note we (i) give a characterization of compact perfect 7\spaces and (ii) obtain some results concerning the cardinality of discrete subsets of perfect spaces.
doi:10.1090/s0002-9939-1972-0296885-5
fatcat:stkewwuxivd4nf5pxuytwhyh3y