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The minimal cofinality of an ultrapower of ω and the cofinality of the symmetric group can be larger than b+
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- Journal:
- The Journal of Symbolic Logic / Volume 76 / Issue 4 / December 2011
- Published online by Cambridge University Press:
- 12 March 2014, pp. 1322-1340
- Print publication:
- December 2011
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- Article
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