Date: Mar 24, 2013 5:28 AM
Author: William Hughes
Subject: Re: Matheology § 224

On Mar 24, 10:13 am, WM <> wrote:

> Do you agree that the definition "line of the list that does not
> change the union of all lines" is well defined?

A bit ambiguous. I interpret it to mean
" a line of the list, such that if it is removed and
no other line is removed, then the union of all lines
is not changed"
This is well defined.

Note that every line has this property.
However, there is no information about what will
happen if you remove more than one line.