, Volume 40, Issue 3-4, pp 193-196

A few remarks on Rowbottom cardinals

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Abstract

It is proved that every regular Rowbottom cardinal which is greater than the continuum is strongly inaccessible. We notice that the theory “ZFC + every cardinal of cofinality ω is Rowbottom” is inconsistent. This answers a question raised by C. C. Chang and H. J. Keisler.