John Edser wrote:


>>BOH:- 
>> From the first site:
>>"Given two sets A and B, the intersection of A and B, written A INT B, 
>>is the set C of all elements that are in both A and B."
>>
>> From the second site:
>>"A INT B: A intersection B is the set of all elements that are in both 
>>sets A and B."
>> From the third site:
>>"Intersection - Denotes the set of elements that are members of all the 
>>sets under consideration."
>>(I've written INT for the intersection symbol, as it doesn't appear in 
>>ASCII).
>>
>>JE:-
>>Only _equivalent_ set elements are in n set
>>intersections and not "the same" set element.
> 
> 
> BOH:-
> Having given you the quotes, I was hoping you would actually comment on 
> them, rather than continue on about equivalence.  It's simply not a 
> matter of whether elements are equivalent - it's whether a matter of 
> which sets that are members of.
> 
> 
> 
> JE:-
> I have commented on the quotes, in detail.
> For example, "set C of all elements that 
> are in both A and B" means that all the
> set elements in the intersection C are strictly
> _equivalent_ elements and not just elements
> from one set, i.e not "the same" elements.

This is opaque to me.  Are you saying that the elements in the 
intersection C are not also in sets A and B?

Bob

-- 
Bob O'Hara

Rolf Nevanlinna Institute
P.O. Box 4 (Yliopistonkatu 5)
FIN-00014 University of Helsinki
Finland
Telephone: +358-9-191 23743
Mobile: +358 50 599 0540
Fax:  +358-9-191 22 779
WWW:  http://www.RNI.Helsinki.FI/~boh/
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