Geodesic
Two Boolean Algebras with Extreme Cellular and Compactness Properties
Canadian journal of mathematics, Tome 35 (1983) no. 5, pp. 824-838

Voir la notice de l'article provenant de la source Cambridge University Press

In this paper, we construct two kinds of Boolean algebras with extreme cellular properties and nice embedding properties. The extreme cellular properties are a σ — j-linked but not σ — j + 1-linked and ccc but not σ — 2-linked. The nice embedding properties are that they are ZF-definable subalgebras of both P/F and R (see Preliminaries for notation). It is the author's opinion that R contains much of the “ZF-strength” of P/F. 
Bell, Murray. Two Boolean Algebras with Extreme Cellular and Compactness Properties. Canadian journal of mathematics, Tome 35 (1983) no. 5, pp. 824-838. doi: 10.4153/CJM-1983-047-7
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