2020/03/27 by Przytycki, Feliks, Zdunik, Anna
#Dynamical Systems (math.DS) #FOS: Mathematics #Primary: 37F35 #Secondary: 37F10
paper · doi:10.48550/arxiv.2003.12612
We prove that for every polynomial of one complex variable of degree at least 2 and Julia set not being totally disconnected nor a circle, nor interval, Hausdorff dimension of this Julia set is larger than 1. Till now this was known only in the connected Julia set case. We give also an example of a polynomial with non-connected but not totally disconnected Julia set and such that all its components comprising of more than single points are analytic arcs, thus resolving a question by Christopher Bishop, who asked whether every such component must have Hausdorff dimension larger than 1.