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searching for Mahlo cardinal 3 found (17 total)

Ordinal analysis (3,572 words) [view diff] exact match in snippet view article find links to article

(presumably) Jäger's ψ. 11.^ M{\displaystyle M} represents the first Mahlo cardinal. Uses Rathjen's ψ rather than Buchholz's ψ. 12.^ K{\displaystyle K}

Veblen function (2,625 words) [view diff] exact match in snippet view article find links to article

Arithmetic (2009, p.387) M. Rathjen, Ordinal notations based on a weakly Mahlo cardinal, (1990, p.251). Accessed 16 August 2022. M. Rathjen, "The Art of Ordinal

New Foundations (8,126 words) [view diff] exact match in snippet view article find links to article

Cantorian Sets with that of ZFC + a schema asserting the existence of an n-Mahlo cardinal for each concrete natural number n. Ali Enayat has shown that the theory