An algebraic treatment of the barwise co
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Isidore Fleischer; Philip Scott
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Article
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1991
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Springer Netherlands
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English
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A theorem on the extendability of certain subsets of a Boolean algebra to ultrafilters which preserve countably many infinite meets (generalizing Rasiowa-Sikorsld) is used to pinpoint the mechanism of the Barwise proof in a way which bypasses the set theoretical elaborations. ## Technical summary