Re: All hail Neo!
From: Frank Hamersley <terabitemightbe_at_bigpond.com>
Date: Sun, 23 Apr 2006 08:19:35 GMT
Message-ID: <rMG2g.13542$vy1.7467_at_news-server.bigpond.net.au>
>
> I find that sort of handwaving to be a complete non-answer.
Date: Sun, 23 Apr 2006 08:19:35 GMT
Message-ID: <rMG2g.13542$vy1.7467_at_news-server.bigpond.net.au>
Bob Badour wrote:
> Frank Hamersley wrote:
>
>> Bob Badour wrote:
[..]
>>> In that line of thought, here's an interesting question that Date et >>> al have posed before to the n-VL folks: >>> >>> If "exists but empty" is true and "doesn't exist" is false, what is >>> null? >> >> Neither and both!
>
> I find that sort of handwaving to be a complete non-answer.
> A much more
> intellectually honest reply would be: "I don't know."
Not from this black duck (on this occasion)!
> or "Null has no similar analog in set theory."
I wasn't comparing/contrasting the RM with set theory. Perhaps for you it is implicit?
> True and 1 both have the exact same
> analog in set theory. False and 0 both have the exact same analog in set
> theory.
> This has a certain elegance and symmetry.
I agree that and readily subscribe to that in my own endeavours.
> In canonical form:
>
> {} = 0 = false
> {{}} = 1 = true
>
> What is the similar analog for null?
Cheers, Frank. Received on Sun Apr 23 2006 - 10:19:35 CEST