Re: Well Ordering the Reals



boink said:
> On Mon, 21 Nov 2005 15:42:07 -0500, Tony Orlow wrote:
>
>
> > How is this proof different than the inductive proof of the finiteness of the
> > values of the natural numbers?
>
> How does what you just said contradict what I said?
>
> Any finite set of finite numbers is finite. (Duh.)
>
> The set of _all_ finite numbers is infinite.
>
>
But, you cannot get an infinite set by starting with 1 root element, and
successively adding individual successors, since any finite set will still be
finite after the addition of a new element. This is the same argument given for
the finiteness of the natural numbers, that adding 1 to a finite natural will
never give an infinite value, so therefore all successors in the naturals are
finite. So, you either accept both proofs and have a finite set of finite
naturals, or reject them and have an infinite set with infinite values in it.
So, what's it going to be, boinky.
--
Smiles,

Tony
http://www.people.cornell.edu/pages/aeo6/WellOrder/
.



Relevant Pages

  • Re: Extrapolating linear ratios
    ... Every FINITE set, dumbass. ... Obviously infinite sets of naturals do not contain ANY numbers larger ... than the cardinality of the set, since the cardinality of the set is ...
    (sci.logic)
  • Re: Cantor and the binary tree
    ... > infinite set of natural numbers, ... The alternative is an infintie set of naturals of graded sizes, ... It's a finite set for the same reasons I ... The integers lie on the number line. ...
    (sci.math)
  • Re: Well Ordering the Reals
    ... >> Any finite set of finite numbers is finite. ... > successively adding individual successors, since any finite set will still be ... after _infinitely_ many steps you'll get an infinite set. ... > naturals, or reject them and have an infinite set with infinite values in it. ...
    (sci.math)
  • Re: infinity
    ... >>> predecessors of n is finite. ... But the definition of 'infinite set' does not mention ... For example, the set of naturals has no such elements, yet is ... > The set of finite successors to a finite natural x is NOT ...
    (sci.math)
  • Re: Distinct linear orderings on Z
    ... When you speak of infinite domains, sets of numbers that go to infinity in some ... to be over the same infinite domain, say the naturals. ... > Do you agree that for every finite set S, ... If you are saying that the difference in number between the odds and evens can ...
    (sci.math)