@MISC{Chenxin01quasi-symmetricinvariance, author = {Li Chenxin}, title = {Quasi-symmetric invariance of S-multimodal maps ∗}, year = {2001} }
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Abstract
The Collet-Eckmann condition is crucial in the study of maps with neg-ative Schwarzian derivatives. Therefore, we provided a geometrical charac-terization of Collet-Eckmann condition of the S-multimodal maps and use it proved that Collet-Eckmann condition is a quasi-symmetric (topologi-cal) invariant of S-multimodal maps: if an S-multimodal map f is quasi-symmetrically conjugate to another S-multimodal map g then f satisfies the Collet-Eckmann condition if and only if g satisfies the Collet-Eckmann con-dition.