Interval Maps and Koenigs’ Sequences
Dewsnap, D. J. ; Fischer, P.
Real Anal. Exchange, Tome 25 (1999) no. 1, p. 205-222 / Harvested from Project Euclid
Let $f$ be an interval map in a neighborhood of the fixed point $0$ with \(-1<\lambda=f'(0)<0\). Continuity of $f$ is not assumed at points other than the fixed point. It is shown that if either $$f\circ f(x)\geq\lambda^{2}x \text{ or }f\circ f(x)\leq\lambda^{2}x$$ for each $x$ in a neighborhood of $0$, then the Koenigs' sequence \(\{\phi_{k}\}\) defined by $\phi_{k}(x)=\dfrac{f^{k}(x)}{\lambda^{k}}$ converges uniformly to a limit \(\phi\) in a neighborhood of $0$ with \(\phi(0)=0\) and \(\phi'(0)=1\). Two examples are presented, the first of which is a \(C^{1}\) map $f$ with \(f(0)=0\) and \(-1
Publié le : 1999-05-15
Classification:  Koenigs' sequences,  iterative square roots,  39B12,  58F03
@article{1231187600,
     author = {Dewsnap, D. J. and Fischer, P.},
     title = {Interval Maps and Koenigs' Sequences},
     journal = {Real Anal. Exchange},
     volume = {25},
     number = {1},
     year = {1999},
     pages = { 205-222},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1231187600}
}
Dewsnap, D. J.; Fischer, P. Interval Maps and Koenigs’ Sequences. Real Anal. Exchange, Tome 25 (1999) no. 1, pp.  205-222. http://gdmltest.u-ga.fr/item/1231187600/