5 citations · 12 across the 14 of their papers we have counts for
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math.MG2017
A Koebe distortion theorem for quasiconformal mappings in the Heisenberg group
Tomasz Adamowicz, Katrin Fässler, Ben Warhurst
We prove a Koebe distortion theorem for the average derivative of a quasiconformal mapping between domains in the sub-Riemannian Heisenberg group . Several auxiliary…
math.MG2015★ 5 cited
Prime ends in the Heisenberg group and the boundary behavior of quasiconformal mappings
Tomasz Adamowicz, Ben Warhurst
We investigate prime ends in the Heisenberg group extending Näkki's construction for collared domains in Euclidean spaces. The corresponding class of domains is de…
math.MG2011
Ultrarigid tangents of sub-Riemannian nilpotent groups
Enrico Le Donne, Alessandro Ottazzi, Ben Warhurst
We show that the tangent cone at the identity is not a complete quasiconformal invariant for sub-Riemannian nilpotent groups. Namely, we show that there exists a nilpotent Lie grou…