On Feb 20, 12:37 pm, WM <mueck...@rz.fh-augsburg.de> wrote: > On 20 Feb., 11:30, William Hughes <wpihug...@gmail.com> wrote: <snip> > > A statement you can make is that there > > is no line of the list with the property > > that it is coFIS to d. > > (you do not need every line or every FIS to "actually > > exist" to make this statement) > > You need all FISs of d to make this statement.
No, for each line of L you only need some of the FISs. For every line you need every not all.
> > Let z be a potentially infinite sequence such that > > for some natural number m, the mth FIS of > > z contains a zero. > > > Are z and x coFIS? > > No.
Is the following statement true
For every natural number n we have
the (n+1)st FIS of the nth line of L contains a 0.