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Semi-Cohen Versus Cohen Algebras

Jindřich Zapletal
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Abstract

We show that there are semi-Cohen Boolean algebras which cannot be completely embedded into Cohen Boolean algebras. Using the ideas from this proof, we give a simpler argument for a theorem of S. Koppelberg and S. Shelah, stating that there are complete subalgebras of Cohen algebras which are not Cohen themselves.

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Jindřich Zapletal. 1994-11-22. Semi-Cohen Versus Cohen Algebras. https://arxiv.org/abs/math/9411208

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