> > Please let me know: Does the list consisting of A0, A1, A2, A3, ... > > contain its antidiagonal or not? > > No, of course not.
The set of all these antidiagonals A0, A1, A2, A3, ... constructed according to my construction process and including the absent one is a countable set. > > > > That is not a problem. It shows however, that there are countable sets > > that cannot be listed. > > How exactly does it show that there are countable sets that cannot be > listed? > See the one above: The results of my construction process. >
> OK, but you've still not given any explanation why you think the > antidiagonals of your process cannot be listed! (I'm genuinely baffled.)