Freely quasiconformal maps and distance ratio metric
: Li Y., Ponnusamy S., Vuorinen M.
Publisher: Cambridge University Press
: 2014
: Journal of the Australian Mathematical Society
: Journal of the Australian Mathematical Society
: 97
: 3
: 383
: 390
: 8
: 1446-8107
DOI: https://doi.org/10.1017/S1446788714000329
: http://api.elsevier.com/content/abstract/scopus_id:84911912997
Suppose that (Formula presented.) and (Formula presented.) denote real Banach spaces with dimension at least 2 and that (Formula presented.) and (Formula presented.) are domains. Let (Formula presented.) be a homeomorphism with (Formula presented.). We say that a homeomorphism (Formula presented.) is (Formula presented.)-FQC if for every subdomain (Formula presented.), we have (Formula presented.) holds for all (Formula presented.). In this paper, we establish, in terms of the (Formula presented.) metric, a necessary and sufficient condition for a homeomorphism (Formula presented.) to be FQC. Moreover, we give, in terms of the (Formula presented.) metric, a sufficient condition for a homeomorphism (Formula presented.) to be FQC. On the other hand, we show that this condition is not necessary.