There are exactly 2 interesting infinite cardinals.
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Oldies but goodies! Who's on second?
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I don't understand the question.
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Are there any other infinite cardinals? Are any of them at all interesting?
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ZFC says there are many. Whether it is correct on that point is a tricky philosophical question that I shall not attempt to answer here. Some others, including Aleph_1, Beth_2, and the least inaccessible (if it exists), are interesting in some ways.
End of conversation
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