A retraction theorem for topological fundamental groups with application to the Hawaiian earring

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A characterization of regular topological fundamental groups yields a `no retraction theorem' for spaces constructed in similar fashion to the Hawaiian earring.
4 pages

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Algebraic Topology, General Topology, 54H11

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http://salesiana.dossiersoluciones.com/handle/123456789/74150

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0502218
 http://arxiv.org/abs/math/0502218

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arXiv