Invariant metric properties of maps
Benjamin Halpern (1971)
Fundamenta Mathematicae
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Benjamin Halpern (1971)
Fundamenta Mathematicae
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J. Carruth (1970)
Fundamenta Mathematicae
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R. Engelking, A. Lelek (1961)
Colloquium Mathematicae
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R. Kapała, A. Lelek (1962)
Colloquium Mathematicae
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H. Berkowitz (1972)
Fundamenta Mathematicae
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S. Hildebrand, D. Sanderson (1965)
Fundamenta Mathematicae
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Edwin Miller (1937)
Fundamenta Mathematicae
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Nina M. Roy (1989)
Publicacions Matemàtiques
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In this expository paper it is shown that Martin's Axiom and the negation of the Continuum Hypothesis imply that the product of ccc spaces is a ccc space. The Continuum Hypothesis is then used to construct the Laver-Gavin example of two ccc spaces whose product is not a ccc space.
A. Lelek (1964)
Fundamenta Mathematicae
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Nikiel, J., Treybig, L.B., Tuncali, H.M. (1997)
International Journal of Mathematics and Mathematical Sciences
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Jacek Nikiel (1984)
Fundamenta Mathematicae
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