tetration from alternative fixed point
#16
(07/21/2010, 03:24 AM)bo198214 Wrote:
(07/01/2010, 03:31 PM)sheldonison Wrote: Kouznetsov's method requires three consecutive exponents, (he uses 0, 1, e), and their vertical (along increasing imaginary) paths to the fixed point.

As I think a second time about it, why does he need paths to the fixed point?
He integrates along the paths Re(z)=1, Re(z)=-1.
He merely forces the value of the superfunction to be the fixed point for imaginary part going to infinity. How the path behaves while going to the fixed point is not essential for his computation, isnt it?
After reading the cauchy computation thread, I think the Cauchy algorithm is sensitive to getting a reasonable initial guess that is close enough to get convergence, and is also sensitive to updating the nodes in in an order that helps guarantee convergence.

Are there any links on the forum with Riemann (Knesser's solution) mapping results? I remember Jay posted some results. I've been toying with very simple iterative Riemann mapping, and was able to get some semi-reasonable results.
Reply


Messages In This Thread
RE: tetration from alternative fixed point - by sheldonison - 07/21/2010, 04:58 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Down with fixed points! Daniel 1 3,044 04/29/2023, 11:02 PM
Last Post: tommy1729
  Semi-group iso , tommy's limit fix method and alternative limit for 2sinh method tommy1729 1 4,939 12/30/2022, 11:27 PM
Last Post: tommy1729
  Iteration with two analytic fixed points bo198214 62 79,189 11/27/2022, 06:53 AM
Last Post: JmsNxn
Question The Different Fixed Points of Exponentials Catullus 22 27,135 07/24/2022, 12:22 PM
Last Post: bo198214
  Quick way to get the repelling fixed point from the attracting fixed point? JmsNxn 10 14,200 07/22/2022, 01:51 AM
Last Post: JmsNxn
  Apropos "fix"point: are the fractional iterations from there "fix" as well? Gottfried 12 16,436 07/19/2022, 03:18 AM
Last Post: JmsNxn
Question Two Attracting Fixed Points Catullus 4 7,261 07/04/2022, 01:04 PM
Last Post: tommy1729
  Alternative manners of expressing Kneser JmsNxn 1 5,177 03/19/2021, 01:02 AM
Last Post: JmsNxn
  Are tetrations fixed points analytic? JmsNxn 2 11,796 12/14/2016, 08:50 PM
Last Post: JmsNxn
  Derivative of exp^[1/2] at the fixed point? sheldonison 10 38,152 01/01/2016, 03:58 PM
Last Post: sheldonison



Users browsing this thread: 1 Guest(s)