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- Newsgroups: alt.usage.english
- Path: sparky!uunet!stanford.edu!ames!data.nas.nasa.gov!wk223.nas.nasa.gov!asimov
- From: asimov@wk223.nas.nasa.gov (Daniel A. Asimov)
- Subject: Re: quite unique
- References: <BxuK87.176@ccu.umanitoba.ca> <1992Nov17.181046.21137@nas.nasa.gov> <1992Nov18.192304.15503@nas.nasa.gov> <1992Nov18.221451.14168@bcrka451.bnr.ca>
- Sender: news@nas.nasa.gov (News Administrator)
- Organization: NASA Ames Research Center
- Date: Thu, 19 Nov 92 18:11:16 GMT
- Message-ID: <1992Nov19.181116.7868@nas.nasa.gov>
- Lines: 40
-
- In article <1992Nov18.221451.14168@bcrka451.bnr.ca>, nadeau@bcarh1ab.bnr.ca (Rheal Nadeau) writes:
- |> In article <1992Nov18.192304.15503@nas.nasa.gov> asimov@wk223.nas.nasa.gov (Daniel A. Asimov) writes:
- |> >In article <1992Nov17.181046.21137@nas.nasa.gov> asimov@wk223.nas.nasa.gov (Daniel A. Asimov) writes:
- |> >> [...]
- |> >>In scientific contexts, on the other hand, there would be no sense
- |> >>at all in trying, for example, to intensify "Two is the unique even
- |> >>prime number" with a comparative.
- |> >>
- |> >>--Daz
- |> >
- |> >Come to think of it, consider the following two uniquenesses:
- |> >
- |> >a) 2 is the unique integer that is an even prime number.
- |> >
- |> >b) 1/3 is the unique real number x satisfying the equation 3x = 1.
- |> >
- |> >Since there are infinitely more real numbers than integers,
- |> >perhaps it *does* make sense to say that 1/3 is "more unique"
- |> >than the number 2, in the above contexts.
- |>
- |> Wrong - there are not infinitely more real numbers than integers. If I
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- |> had my university notes, I could trot out the proof, but in the
- |> meantime: there are infinite numbers of integers and of real numbers.
- |> "Infinite" being an absolute term, you can't say that one infinite set
- |> is larger than the other (and certainly not infinitely larger).
- |>
- |> Hmm, is Roger now going to argue that "quite infinite" and "more
- |> infinite" are legitimate? :-)
- |>
- |> The Rhealist - Rheal Nadeau - nadeau@bnr.ca - Speaking only for myself
-
- Um, yes, indeed, there *are* more real numbers than integers, as strange as
- that my seem. Georg Cantor proved in the mid-1800s that there exists no one-to-
- one correspondence between these two sets (the mathematical criterion for two
- sets to have equal size). I would be happy to send the proof to anyone who
- requests is, as it is simple enough that anyone without mathematical training
- can understand it, and it takes only a few sentences of explanation.
-
- --Daz
-