Israel Journal of Mathematics

, Volume 116, Issue 1, pp 285-321

First online:

The generalized continuum hypothesis revisited

  • Saharon ShelahAffiliated withInstitute of Mathematics, The Hebrew University of JerusalemDepartment of Mathematics, Rutgers University Email author 

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We can reformulate the generalized continuum problem as: for regular κ<λ we have λ to the power κ is λ, We argue that the reasonable reformulation of the generalized continuum hypothesis, considering the known independence results, is “for most pairs κ<λ of regular cardinals, λ to the revised power of κ is equal to λ”. What is the revised power? λ to the revised power of κ is the minimal cardinality of a family of subsets of λ each of cardinality κ such that any other subset of λ of cardinality κ is included in the union of strictly less than κ members of the family. We still have to say what “for most” means. The interpretation we choose is: for every λ, for every large enoughK < ℶ w . Under this reinterpretation, we prove the Generalized Continuum Hypothesis.