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On strongly and weakly defined boolean terms

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Abstract

A problem of Gaifman about strongly and weakly defined Boolean terms is solved by finding a Boolean algebra ℱ with a complete subalgebra ℰ such that some element of ℱ not in ℰ can be obtained from elements of ℰ by meets and joins in the normal completion of ℱ.

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References

  1. H. Gaifman,Infinite Boolean polynomials I, Fund. Math.54 (1964), 229–250.

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  2. R. Sikorski,Boolean Algebras, 2nd edition, Springer-Verlag, Berlin, 1964.

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  3. J. Stavi,On strongly and weakly defined Boolean terms, Notices Amer. Math. Soc.18 (1971), 1107.

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Stavi, J. On strongly and weakly defined boolean terms. Israel J. Math. 15, 31–43 (1973). https://doi.org/10.1007/BF02771771

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  • DOI: https://doi.org/10.1007/BF02771771

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