11/25/2007, 01:02 AM
If I remember correctly, Daniel Geisler had a discussion about that. In fact he showed that
http://tetration.org/Resources/Files/Ackermann.ppt
Andrew Robbins
\( b{\uparrow}^{\infty}\infty = b \)
which can be found in his powerpoint presentation about it at http://tetration.org/Resources/Files/Ackermann.ppt
Andrew Robbins

