Solving tetration for base 0 < b < e^-e
#13
(09/12/2009, 09:04 PM)mike3 Wrote: So then since neither of those worked, it seems all we're left with is the Ansus formula and the Cauchy integral (but determining the correct contours and asymptotic behavior, now that's the rub...).

I dont think, one can say that the regular iteration didnt work.
Its rather that it doesnt match your requirement to have a singularity at -2.
Though this requirement is quite apparent for real-valued functions, because we necessarily use the real branch of the logarithm, the necessity is not so clear for complex valued functions, where there is free choice of the branch of the logarithm.

It sounds anyway strange to prefer a singular tetrational over an entire tetrational if there is not the demand of real values.

Btw.: Kouznetsov's Contour integral method is rather applicable between two conjugate non-real fixed points. I doubt that you can use the idea for a real 2-cycle.
Reply


Messages In This Thread
RE: Solving tetration for base 0 < b < e^-e - by bo198214 - 09/13/2009, 08:08 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Kneser tetration Polynomial approximation for base e RaeesHarris 0 611 09/02/2026, 07:59 PM
Last Post: RaeesHarris
  Mixed-base tetration: five preprints, a faster fatou.gp fork, and a base-change calcu Lightrunner 0 1,182 07/15/2026, 08:33 AM
Last Post: Lightrunner
  Seeking an arXiv endorser for mixed-base tetration (math.DS) Lightrunner 0 777 07/13/2026, 10:19 PM
Last Post: Lightrunner
  Base -1 marraco 15 43,011 07/06/2022, 09:37 AM
Last Post: Catullus
  I thought I'd take a crack at base = 1/2 JmsNxn 9 17,292 06/20/2022, 08:28 AM
Last Post: Catullus
  solving f(g(x)) = f(x) converging to f(exp(x)) = f(x) tommy1729 2 5,360 05/26/2022, 11:07 PM
Last Post: JmsNxn
Big Grin Repetition of the last digits of a tetration of generic base Luknik 12 24,703 12/16/2021, 12:26 AM
Last Post: marcokrt
  On the [tex]2 \pi i[/tex]-periodic solution to tetration, base e JmsNxn 0 4,222 09/28/2021, 05:44 AM
Last Post: JmsNxn
  Complex Tetration, to base exp(1/e) Ember Edison 7 26,730 08/14/2019, 09:15 AM
Last Post: sheldonison
  b^b^x with base 0<b<e^-e have three real fixpoints Gottfried 1 10,331 11/07/2017, 11:06 AM
Last Post: sheldonison



Users browsing this thread: 1 Guest(s)