Putting a diamond inside the square

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6 Scopus citations


35-year-old theorem of Shelah, □λ + ⋄(λ+) does not imply ⋄λ for regular uncountable cardinals ? Here, it is proved that □λ + ⋄(λ+) is equivalent to ⋄λ for every singular cardinal λ.

Original languageEnglish
Pages (from-to)436-442
Number of pages7
JournalBulletin of the London Mathematical Society
Issue number3
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2015 London Mathematical Society.


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