We show that, for the family of functions where n ≥ 3 and λ ∈ ℂ, there is a unique McMullen domain in parameter space. A McMullen domain is a region where the Julia set of is homeomorphic to a Cantor set of circles. We also prove that this McMullen domain is a simply connected region in the plane that is bounded by a simple closed curve.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-fm185-3-5, author = {Robert L. Devaney}, title = {Structure of the McMullen domain in the parameter planes for rational maps}, journal = {Fundamenta Mathematicae}, volume = {185}, year = {2005}, pages = {267-285}, zbl = {1093.37016}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm185-3-5} }
Robert L. Devaney. Structure of the McMullen domain in the parameter planes for rational maps. Fundamenta Mathematicae, Tome 185 (2005) pp. 267-285. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm185-3-5/