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Mappings of finite distortion: formation of cusps
Koskela, Pekka
Takkinen, Juhani

Data: 2007
Resum: In this paper we consider the extensions of quasiconformal mappings f : B → Ωs to the whole plane, when the domain Ωs is a domain with a cusp of degree s > 0 and thus not an quasidisc. While these mappings do not have quasiconformal extensions, they may have extensions that are homeomorphic mappings of finite distortion with an exponentially integrable distortion, but in such a case R 2B exp(λK(x)) dx = ∞ for all λ > 1/s. Conversely, for a given s > 0 such a mapping is constructed with R 2B exp(λK(x)) dx < ∞ for all λ < 1/s.
Drets: Tots els drets reservats.
Llengua: Anglès.
Document: Article ; recerca ; article ; publishedVersion
Publicat a: Publicacions Matemàtiques, V. 51 n. 1 (2007) p. 223-242, ISSN 0214-1493

Adreça original:
DOI: 10.5565/PUBLMAT_51107_10
DOI: 10.5565/218488

20 p, 219.2 KB

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