(06/29/2009, 08:20 PM)tommy1729 Wrote: i want andrew robbins to compute slog(A) ( exp(A) = A )

That is indeterminate.

(06/29/2009, 08:20 PM)tommy1729 Wrote: how many slog's are there anyway ??

I only know of 3 slogs that are defined from scratch:

- The integer-valued superlog, which is better known as log star.

- The intuitive superlog, which is based on the research of Peter Walker and a few people on this forum.

- A continued fraction superlog (Nelson's superlog), based on this conversation, which I wrote about in section 4.4.6 of the Tetration Reference.

Andrew Robbins

On a slightly related note, you might as well try and calculate simpler cases (all of which are indeterminate, if my mental calculations are correct)

1^^-1

1^^-2

0^^-2

I'm sure you can find other places where the value of tetration is indeterminate.