05/13/2011, 08:26 PM
(05/13/2011, 12:27 PM)tommy1729 Wrote: btw , how did they help you ? im curious. link ?
http://mathoverflow.net/questions/60264/...-functions
http://mathoverflow.net/questions/60093/...-functions
However the one about primitive recursiveness of the left-brackted Ackermann function is still unanswered, though it got 5 point rating:
http://mathoverflow.net/questions/62019/...-recursive
