On Apr 5, 10:40 pm, WM <mueck...@rz.fh-augsburg.de> wrote: > On 5 Apr., 21:03, William Hughes <wpihug...@gmail.com> wrote: > > > > > > > > > > > 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).
> > How do you call a set E the number of elements exceeds any given > natural number?
E is a finite subset, thus the number of elements in E equals some given finite number (we do not know which finite number).