Abstract.
We prove that on many inaccessible cardinals there is a Jonsson algebra, so e.g. the first regular Jonsson cardinal λ is λ × ω-Mahlo. We give further restrictions on successor of singulars which are Jonsson cardinals. E.g. there is a Jonsson algebra of cardinality . Lastly, we give further information on guessing of clubs.
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Received: 10 March 1992 / First revised version: 11 August 1997 / Second revised version: 12 September 2000 / Published online: 5 November 2002
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Shelah, S. More Jonsson Algebras. Arch. Math. Logic 42, 1–44 (2003). https://doi.org/10.1007/s001530100119
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DOI: https://doi.org/10.1007/s001530100119