Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2024 MCQ for Transactions of the American Mathematical Society is 1.48 .

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Capacity densities and angular limits of quasiregular mappings
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by Matti Vuorinen
Trans. Amer. Math. Soc. 263 (1981), 343-354
DOI: https://doi.org/10.1090/S0002-9947-1981-0594412-6

Abstract:

It is shown that if a bounded quasiregular mapping of the unit ball ${B^n} \subset {R^n}$, $n \geqslant 2$, has a limit at $b \in \partial {B^n}$ through a set $E \subset {B^n}$ with $b \in \bar E$, then it has an angular limit at $b$ provided that $E$ is contained in an open cone $C \subset {B^n}$ with vertex $b$ and that $E$ is thick enough at $b$. The thickness condition is expressed in terms of the $n$-capacity density.
References
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Bibliographic Information
  • © Copyright 1981 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 263 (1981), 343-354
  • MSC: Primary 30C60
  • DOI: https://doi.org/10.1090/S0002-9947-1981-0594412-6
  • MathSciNet review: 594412