The real number, which is called continuum isn't a countable set.


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送交者: steven 于 2007-01-09, 17:58:25:

回答: ok. Anyway, there is no such mapping function between 由 fuzzify 于 2007-01-09, 17:31:01:

That's why there is mapping. To be more technical,
The rational set = IxI, and the real set = IxIxI.... to infinity. The cardinal of I is Aleph null, and the cardinal of Real is Aleph one, and there is not in between.



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