Date: Mar 23, 2013 6:36 PM
Author: William Hughes
Subject: Re: Matheology § 224

On Mar 23, 11:08 pm, WM <mueck...@rz.fh-augsburg.de> wrote:
> On 23 Mrz., 21:26, William hHughes <wpihug...@gmail.com> wrote:

> You claim that no finite line of the set changes the union.

There is no single finite line such that the removal of this one line
changes the union.

> You claim that when every finite line which does not change the union,
> is deleted, then the union is changed.


When every finite line with the property that when it alone is
removed then the union is not changed, is deleted, then the union
is changed.

This is not equivalent to

There is at least one line l, so that if l is removed the union
is changed.