On 7 Mai, 21:47, Virgil <vir...@ligriv.com> wrote:
> > The union of lines > > cannot contain more elements than one line contains. > > Why not?
Because by construction all elements are in the last line already. > > Unless there is some line that contains all other lines as subsets, > it is inevitable that the union contain more than any one line.
Obviously impossible in the list that I constructed.