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Topic: Set limits.
Replies: 1   Last Post: Jul 24, 2014 6:02 PM

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Ben Bacarisse

Posts: 1,559
Registered: 7/4/07
Re: Set limits.
Posted: Jul 24, 2014 6:02 PM
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Zeit Geist <tucsondrew@me.com> writes:

> On Thursday, July 24, 2014 1:09:50 PM UTC-7, muec...@rz.fh-augsburg.de wrote:
<snip>
>> That's what I did. These few lines
>> s_(n+1) = (s_n U { q | n < q =< n+1 }) \ {q_(n+1)}
>> with s_1 = { q | 0 < q =< 1 } \ {q_1}
>> and q_1 = 1/1, q_2 = 1/2, q_3 = 2/1, q_4 = 3/1...
>> prove that not all rationals are indexed by naturals.

>
> No, they Don't. They Define some Sets, and that is All.


Yes. The last time WM did this I pointed out that he claims a
definition can be a proof and he called me a liar. Presumably, then, in
WM-speak there are things (like some definitions) that can "prove"
something without being "a proof". Do you think he spins this sort of
tangled web in the class room? I hope not.

<snip>
--
Ben.



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