Drexel dragonThe Math ForumDonate to the Math Forum


Math Forum
 Ask Dr. Math
 Discussions
 Internet Newsletter
 MathTools
 Problems of the Week
 Teacher2Teacher
 Teacher Exchange
 Workshops

Search All of the Math Forum:
Browse our Internet Mathematics Library

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


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

Topic: SET THEORY and QUANTIFIER LOGIC are SUPERFLUOUS! You only need
1 or the other!
Replies: 8   Last Post: Nov 22, 2012 4:20 PM

Advanced Search
Reply to this Topic Reply to this Topic

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

Posts: 2,164
Registered: 10/4/10
Re: SET THEORY and QUANTIFIER LOGIC are SUPERFLUOUS! You only
need1 or the other!
Posted: Nov 20, 2012 9:07 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Graham Cooper wrote:
>
> The notation in
>
> { x | p(x) }
>
> stands for ALL VALUES OF x
> that are satisfied in p(x)
>
> This is the SAME 'ALL' as ALL(x) ....predicate(..predicate...
> x ...) ...)
>
> ALL is merely SUBSET!

Yes, old fruit, in a topos there is a natural language the logic of
which is intuitionistic.

--
When a true genius appears in the world, you may know him by
this sign, that the dunces are all in confederacy against him.
Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting

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

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2015. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.