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On closed sets of ordinals


Author: Harvey Friedman
Journal: Proc. Amer. Math. Soc. 43 (1974), 190-192
MSC: Primary 04A20
DOI: https://doi.org/10.1090/S0002-9939-1974-0327521-9
MathSciNet review: 0327521
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Abstract: We prove that every stationary set of countable ordinals contains arbitrarily long countable closed subsets.

References [Enhancements On Off] (What's this?)

  • [1] Robert M. Solovay, Real-valued measurable cardinals, Axiomatic set theory (Proc. Sympos. Pure Math., Vol. XIII, Part I, Univ. California, Los Angeles, Calif., 1967) Amer. Math. Soc., Providence, R.I., 1971, pp. 397–428. MR 0290961

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Additional Information

DOI: https://doi.org/10.1090/S0002-9939-1974-0327521-9
Keywords: Ordinals, cardinals
Article copyright: © Copyright 1974 American Mathematical Society