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Nov 29, 2013 at 17:26 vote accept Zhen Lin
Nov 29, 2013 at 17:07 comment added François G. Dorais @ZhenLin: Actually, I meant $\kappa \vartriangleleft \lambda^+$ in the original. I'm now using $\mu$ to avoid confusion.
Nov 29, 2013 at 17:06 history undeleted François G. Dorais
Nov 29, 2013 at 17:05 history edited François G. Dorais CC BY-SA 3.0
Changed $\lambda$ to $\mu^+$ to make the answer correct again.
Nov 29, 2013 at 15:58 history deleted François G. Dorais via Vote
Nov 29, 2013 at 15:58 history edited François G. Dorais CC BY-SA 3.0
added details
Nov 29, 2013 at 15:53 comment added Zhen Lin I'm confused. The relation $\vartriangleleft$ is only defined for regular cardinals, but an uncountable cardinal $\lambda$ with countable cofinality is necessarily singular and therefore exempt from the question, no?
Nov 29, 2013 at 15:46 history answered François G. Dorais CC BY-SA 3.0