The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: A few minutes of sanity
Replies: 6   Last Post: Nov 4, 2013 9:24 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 1,968
Registered: 12/4/12
Re: A few minutes of sanity
Posted: Nov 4, 2013 11:11 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On 11/4/2013 7:50 AM, Shmuel (Seymour J.) Metz wrote:
> In <l4au0f$125r$>, on 10/24/2013
> at 10:49 AM, (Richard Tobin) said:

>> In article
>> <>,
>> Ben Bacarisse <> wrote:

>>>> - what's yellow and neither true nor false?
>>>> - what's non-orientable and lives in the sea?

>>> I hope you will follow up after a suitable head-scratching period (I'm
>>> stumped).

>> They are indeed Xorn's Lemon and Moebius Dick.
> WTF? Zorn's Lemma is certainly true in ZFC; shouldn't the answer be
> something that is formally undecidable?

Yes. One would think so. For Zorn's lemma
the question should be something more like

what is sometimes everywhere yellow and sometimes not?

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.