Re: Relative Cardinality

In article <1121246520.584259.262020@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
mueckenh@xxxxxxxxxxxxxxxxx wrote:

> Virgil wrote:
>
> > >
> > > Two elements of a set must differ by at least one property.
> >
> > "Properties" are ideas, and non-physical.
>
> How do you fix (or define) these ideas?
>
> Regards, WM

It must be done in the world of the imagination, where they exist. Where
else?
.