Vol. 34, No. 2, 1970

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A note on Hanf numbers

Saharon Shelah

Vol. 34 (1970), No. 2, 541–545
Abstract

We show that for every ξ < (2κ)+, there is a theory T and set of types P in a language of power κ, such that there is a model of T which omits every p P of power λ if and only if λ 3ξ. We also disprove a conjecture of Morley on the existence of algebraic elements.

Mathematical Subject Classification
Primary: 02.50
Milestones
Received: 28 July 1969
Published: 1 August 1970
Authors
Saharon Shelah