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Correction: A method for constructing examples of \(M\)-equivalent spaces. (English) Zbl 0779.54008
The author gives a correction for example 3.19 in his paper [ibid. 36, No. 2, 157-171 (1990; Zbl 0707.54007)] which has become invalid, because Lemma 3.22 (being crucial for that example) turned out to be false.

54B15 Quotient spaces, decompositions in general topology
54G20 Counterexamples in general topology
22A05 Structure of general topological groups
54C15 Retraction
54D50 \(k\)-spaces
54D55 Sequential spaces
Full Text: DOI
[1] Graev, M.I.; Graev, M.I., Free topological groups, Izv. akad. nauk SSSR ser. mat., Amer. math. soc. transl. ser., 1, 8, 279-324, (1962), (in English) · Zbl 0103.33701
[2] Okunev, O.G., A method for constructing examples of M-equivalent spaces, Topology appl., 36, 157-171, (1990) · Zbl 0707.54007
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