Katrin FAESSLER
Katrin FAESSLER
Katrin FAESSLER
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Heisenberg stretch map<br />
Definition<br />
Let 0 < k < 1. The Heisenberg stretch map is given by<br />
Properties:<br />
fk(ξ, ψ, η) = (kξ, tan −1 tan ψ<br />
( k ), η).<br />
fk is quasiconformal with fk(p)H = p k H ,<br />
<strong>Katrin</strong> Fässler (University of Helsinki) A stretch map on H 1<br />
HCAA 2012 12 / 23