4.I.3G

Geometry of Group Actions
Part II, 2005

Show that a set FRnF \subset \mathbb{R}^{n} with Hausdorff dimension strictly less than one is totally disconnected.

What does it mean for a Möbius transformation to pair two discs? By considering a pair of disjoint discs and a pair of tangent discs, or otherwise, explain in words why there is a 2-generator Schottky group with limit set ΛS2\Lambda \subset \mathbb{S}^{2} which has Hausdorff dimension at least 1 but which is not homeomorphic to a circle.