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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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First countability and local simple connectivity of one point unions
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by Katsuya Eda PDF
Proc. Amer. Math. Soc. 109 (1990), 237-241 Request permission

Abstract:

There exists a path-connected, simply connected, Tychonoff space $X$ with $x$ such that $X$ is locally simply connected at $x$, but $(X,x) \vee (X,x)$ is not simply connected.
References
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Additional Information
  • © Copyright 1990 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 109 (1990), 237-241
  • MSC: Primary 55Q20; Secondary 54G20
  • DOI: https://doi.org/10.1090/S0002-9939-1990-1013969-5
  • MathSciNet review: 1013969