Date: Apr 5, 2013 3:03 PM
Author: William Hughes
Subject: Re: Matheology § 224
On Apr 5, 6:04 pm, WM <mueck...@rz.fh-augsburg.de> wrote:

> On 5 Apr., 12:08, William Hughes <wpihug...@gmail.com> wrote:

<snip>

> > There is an infinite set of lines D

> > such that any finite subset of D can be removed.

>

> What has to remain?

This depends on the finite subset removed.

If the finite set removed is E then

D\E has to remain. Note that whatever

subset E is chosen the number of lines

in D\E is infinite (but of course we

do not know which lines are in D\E).

However, D cannot be removed without

changing the union of the remaining lines.