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The essentially free spectrum of a variety

Alan H. Mekler·Saharon Shelah·Otmar Spinas
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Abstract

We partially prove a conjecture from [MkSh:366] which says that the spectrum of almost free, essentially free, non-free algebras in a variety is either empty or consists of the class of all successor cardinals.

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Alan H. Mekler, Saharon Shelah, Otmar Spinas. 1994-11-15. The essentially free spectrum of a variety. https://arxiv.org/abs/math/9411234

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