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Topic: Problems with Infinity?
Replies: 72   Last Post: Apr 12, 2013 1:36 PM

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jsavard@ecn.ab.ca

Posts: 318
Registered: 12/12/04
Re: Problems with Infinity?
Posted: Apr 11, 2013 9:49 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Apr 11, 6:40 pm, Walter Bushell <pr...@panix.com> wrote:
> In article <512CA332.AD4F7...@btinternet.com>,
>  Frederick Williams <freddywilli...@btinternet.com> wrote:
>

> > That the cardinality of the continuum (c = 2^{aleph_0}) is equal to
> > aleph_1 is Cantor's continuum hypothesis which modern set theory settles
> > neither one way nor the other.

>
> Does anyone care. That is do any important results hang on either one?


Well, it's hard for me to imagine what form a set with an intermediate
cardinality could take. So, if one were exhibited, that would be
fascinating.

However, there is a set known to have cardinality aleph-1, the set of
well-orderings of the integers. So, if people could just get that set
clearly explained, it would be clear if it could or could not be put
into one-to-one correspondence with the reals.

John Savard


Date Subject Author
2/24/13
Read Problems with Infinity?
William Elliot
2/24/13
Read Re: Problems with Infinity?
garabik-news-2005-05@kassiopeia.juls.savba.sk
2/24/13
Read Re: Problems with Infinity?
Frederick Williams
2/24/13
Read Re: Problems with Infinity?
David DeLaney
2/25/13
Read Re: Problems with Infinity?
P. Taine
2/26/13
Read Re: Problems with Infinity?
Butch Malahide
2/24/13
Read Re: Problems with Infinity?
jsavard@ecn.ab.ca
2/25/13
Read Re: Problems with Infinity?
ross.finlayson@gmail.com
2/25/13
Read Re: Problems with Infinity?
Brian M. Scott
2/25/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/25/13
Read Re: Problems with Infinity?
jsavard@ecn.ab.ca
2/25/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
ross.finlayson@gmail.com
2/26/13
Read Re: Problems with Infinity?
Frederick Williams
2/26/13
Read Re: Problems with Infinity?
Wayne Throop
2/26/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
ross.finlayson@gmail.com
2/25/13
Read Re: Problems with Infinity?
Frederick Williams
2/25/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/25/13
Read Re: Problems with Infinity?
Frederick Williams
2/26/13
Read Re: Problems with Infinity?
Wayne Throop
2/26/13
Read Re: Problems with Infinity?
Wayne Throop
2/26/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
Wayne Throop
2/26/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
Wayne Throop
2/27/13
Read Re: Problems with Infinity?
David DeLaney
2/27/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/28/13
Read Re: Problems with Infinity?
David DeLaney
2/28/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/28/13
Read Re: Problems with Infinity?
David DeLaney
3/1/13
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Shmuel (Seymour J.) Metz
3/1/13
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David DeLaney
3/2/13
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Shmuel (Seymour J.) Metz
2/28/13
Read Re: Problems with Infinity?
jsavard@ecn.ab.ca
2/28/13
Read Re: Problems with Infinity?
David Johnston
2/27/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/26/13
Read Re: Problems with Infinity?
Frederick Williams
2/26/13
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David DeLaney
4/11/13
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Walter Bushell
4/11/13
Read Re: Problems with Infinity?
Brian M. Scott
4/11/13
Read Re: Problems with Infinity?
Butch Malahide
4/12/13
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fom
4/12/13
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Wayne Throop
4/12/13
Read Re: Problems with Infinity?
fom
4/12/13
Read Re: Problems with Infinity?
Wayne Throop
4/12/13
Read Re: Problems with Infinity?
fom
4/11/13
Read Re: Problems with Infinity?
jsavard@ecn.ab.ca
4/11/13
Read Re: Problems with Infinity?
Butch Malahide
4/12/13
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Virgil
4/12/13
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Brian M. Scott
4/12/13
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jsavard@ecn.ab.ca
4/11/13
Read Re: Problems with Infinity?
fom
4/11/13
Read Re: Problems with Infinity?
Butch Malahide
4/11/13
Read Re: Problems with Infinity?
Butch Malahide
4/12/13
Read Re: Problems with Infinity?
Brian M. Scott
4/12/13
Read Re: Problems with Infinity?
Butch Malahide
2/26/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/26/13
Read Re: Problems with Infinity?
Brian M. Scott
2/26/13
Read Re: Problems with Infinity?
David Bernier
2/26/13
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Shmuel (Seymour J.) Metz
2/28/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
4/11/13
Read Re: Problems with Infinity?
Walter Bushell
4/11/13
Read Re: Problems with Infinity?
Shmuel (Seymour J.) Metz
2/26/13
Read Re: Problems with Infinity?
Frederick Williams
2/27/13
Read Re: Problems with Infinity?
Scott Fluhrer

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