A1 Refereed original research article in a scientific journal

Quasiconformal maps with bilipschitz or identity boundary values in Banach spaces




AuthorsYaxiang Li, Matti Vuorinen, Xiantao Wang

PublisherFinnish Academy of Science and Letters

Publishing placeFinland

Publication year2014

JournalAnnales Academiae Scientiarum Fennicae. Mathematica

Journal name in sourceAnnales Academiae Scientiarum Fennicae Mathematica

Volume39

Issue1

First page 905

Last page917

Number of pages13

ISSN1239-629X

DOIhttps://doi.org/10.5186/aasfm.2014.3954

Web address http://www.acadsci.fi/mathematica/Vol39/LiVuorinenWang.html


Abstract

Suppose that E and E' denote real Banach spaces with dimension at least 2 and that D {subset of with not equal to} E and D' {subset of with not equal to} E' are uniform domains with homogeneously dense boundaries. We consider the class of all ϕ-FQC (freely ϕ-quasiconformal) maps of D onto D' with bilipschitz boundary values. We show that the maps of this class are η-quasisymmetric. As an application, we show that if D is bounded, then maps of this class satisfy a two sided Hölder condition. Moreover, replacing the class ϕ-FQC by the smaller class of M-QH maps, we show that M-QH maps with bilipschitz boundary values are bilipschitz. Finally, we show that if f is a ϕ-FQC map which maps D onto itself with identity boundary values, then there is a constant C, depending only on the function ϕ, such that for all x ∈ D, the quasihyperbolic distance satisfies k(x, f(x)) ≤ C.




Last updated on 2024-26-11 at 15:30