Date: Mar 22, 2013 3:40 PM
Author: Virgil
Subject: Re: Matheology � 224

In article 
WM <> wrote:

> But I don't want to remove a set. When has it been prohibited to
> handle elements of a set?

One cannot remove an element from a set of elements without removing the
singleton set containing that element from the set of all subsets of the
set of elements.

One cannot remove a line from the set of all lines without removing the
set containing only that line from the set of all sets of lines.

At least not outside Wolkenmuekenheim.