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Proceedings of the American Mathematical Society

Published by the American Mathematical Society, the Proceedings of the American Mathematical Society (PROC) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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On closed sets of ordinals
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by Harvey Friedman PDF
Proc. Amer. Math. Soc. 43 (1974), 190-192 Request permission

Abstract:

We prove that every stationary set of countable ordinals contains arbitrarily long countable closed subsets.
References
  • 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
  • © Copyright 1974 American Mathematical Society
  • 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