Hausdorff dimension distribution of quasiconformal mappings on the Heisenberg group

• DOI: 10.1007/bf02790265
• Publication Date: 2008-12-10T19:21:24Z
• Authors: Zoltán M. Balogh

We construct quasiconformal mappings on the Heisenberg group which change the Hausdorff dimension of Cantor-type sets in an arbitrary fashion. On the other hand, we give examples of subsets of the Heisenberg group whose Hausdorff dimension cannot be lowered by any quasiconformal mapping. For a general set of a certain Hausdorff dimension we obtain estimates of the Hausdorff dimension of the image set in terms of the magnitude of the quasiconformal distortion.