Talk:Cardinal

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How is the Cessna a sub-heading of the bird? SkyDot 19:13, 30 October 2006 (UTC)


The consistency of the existence of strongly inaccessible cardinals can not be proved under ZFC.


Is that correct? I thought the existence of strongly inaccessible cardinals can (provably) not be proved, while

it is open whether their non-existence can be proved.


In other words, "the consistency of the existence of strongly inaccessible cardinals" has not yet been proved

while the consistency of their non-existence has been proved.



Yes, your version is correct. That existence of inacc. cardinals cannot be proved is a direct consequence of the 2nd incompleteness theorem (one observes that the set of all sets with rank less than that of an inacc. cardinal form a model of ZFC).


Incidentally, wouldn't it be better to have the main article at Cardinal number? "Cardinal" has a pretty well-defined religious meaning as well, and "cardinal number" is not outdated.

--AV



not to mention the bird. And the baseball team.--MichaelTinkler



Ok, I'm convinced. Cardinal number it is. --AxelBoldt


As this refers to a subdivision/less obvious definition of the term, could it be emphasised that it is the number that is being referred to, not a religious person being away from their phone (g). Jackiespeel 18:08, 9 January 2006 (UTC)

[edit] Deleting Mike Cline Contributions

I am deleting or reverting any contributions I have previously made to this article for the following reason. I work for a company that practices and teaches Strategic Planning methodologies thus making my contribution to any article related to Strategy topics a conflict of interest an in violation of Wikipedia Conflict of Interest guidelines WP:COI --Mike Cline 13:25, 4 February 2007 (UTC)