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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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A class of mappings containing all continuous and all semiconnected mappings
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by J. K. Kohli PDF
Proc. Amer. Math. Soc. 72 (1978), 175-181 Request permission

Abstract:

A function $f:X \to Y$ is called s-continuous if for each $x \in X$ and each open set V containing $f(x)$ and having connected complement there is an open set U containing x such that $f(U) \subset V$. In this paper basic properties of s-continuous functions are studied; conditions on domain and/or range implying continuity of s-continuous functions are obtained which generalize recent theorems of Jones, Lee and Long on semiconnected functions. Improvements of recent results of Hagan, Kohli and Long concerning the continuity of certain connected functions follow as a consequence. Also characterizations of semilocally connected spaces in terms of s-continuous functions are obtained.
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Additional Information
  • © Copyright 1978 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 72 (1978), 175-181
  • MSC: Primary 54C05
  • DOI: https://doi.org/10.1090/S0002-9939-1978-0493941-9
  • MathSciNet review: 0493941