On 9 Apr., 11:24, William Hughes <wpihug...@gmail.com> wrote: > On Apr 9, 8:56 am, WM <mueck...@rz.fh-augsburg.de> wrote: > > > My answer to your question: If not, then removing every line of the > > collection means nothing remains > > Since to remove every line of the collection means to > remove the collection of all finite lines > if you remove every line of the collection > nothing remains.
Isn't this collection an infinite line? > > > But then my question remains: Why do you think that an infinite > > sequence of finite unions has other P-changing properties than an > > infinite union? > > I do not.
You said that the Binary Tree, when constructed from its FISONs, does not contain their suprema.
You said that the list 1 1, 2 1, 2, 3 ... does not contain a line |N, but this list contains an infinite sequence of finite unions. > > Do you agree with. > > If you remove a finite collection of lines > from D then something remains.