Triggered by a question in the math.stackexchange-forum I looked at real fixpoints of b^b^x and found that for the smallest b<e^-e have three real fixpoints (while b^x has only one).
See a short compilation in:
https://math.stackexchange.com/a/2494323/1714
I have not yet found a closed-form expression - for instance by the Lambert W as in the fixpoint-problem of the simple case b^x.
Gottfried
See a short compilation in:
https://math.stackexchange.com/a/2494323/1714
I have not yet found a closed-form expression - for instance by the Lambert W as in the fixpoint-problem of the simple case b^x.
Gottfried
Gottfried Helms, Kassel