Search All of the Math Forum:

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

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

Topic: Product, Filters and Quantales
Replies: 31   Last Post: Oct 21, 2013 7:52 AM

 Search Thread: Advanced Search

 Messages: [ Previous | Next ]
 William Elliot Posts: 2,637 Registered: 1/8/12
Re: Product, Filters and Quantales
Posted: Oct 11, 2013 12:41 AM
 Plain Text Reply

On Thu, 10 Oct 2013, Victor Porton wrote:

> > F o inf_k Gk = inf{ F o Gk | k in K }
> > inf_j Fj o G = inf{ Fj o G | j in J }

>
> Wrong. I have already given a counter-example in an other message.

I disagreed with the counter example and didn't keep it.
In this notation (subset order), what is the counter example.

> The formula
>
> F o inf_k Gk = inf{ F o Gk | k in K }
>
> is true however when F is a principal filter. (See chapter 9 in my book).

I'm currently at chapter 7.

Date Subject Author
10/9/13 William Elliot
10/10/13 Victor Porton
10/11/13 William Elliot
10/11/13 Victor Porton
10/12/13 William Elliot
10/12/13 Victor Porton
10/12/13 William Elliot
10/14/13 Victor Porton
10/15/13 William Elliot
10/15/13 Victor Porton
10/16/13 William Elliot
10/16/13 Victor Porton
10/17/13 William Elliot
10/17/13 Victor Porton
10/17/13 William Elliot
10/18/13 Victor Porton
10/18/13 William Elliot
10/19/13 Victor Porton
10/19/13 William Elliot
10/19/13 William Elliot
10/20/13 fom
10/20/13 William Elliot
10/20/13 fom
10/20/13 William Elliot
10/20/13 William Elliot
10/20/13 fom
10/20/13 William Elliot
10/20/13 fom
10/21/13 fom
10/21/13 William Elliot
10/21/13 fom
10/20/13 William Elliot

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