Mapping an arc onto a dendritic continuum
B. J. Pearson (1974)
Colloquium Mathematicae
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B. J. Pearson (1974)
Colloquium Mathematicae
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H. Cook (1967)
Fundamenta Mathematicae
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James Davis, W. Ingram (1988)
Fundamenta Mathematicae
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Wojciech Dębski, J. Heath, J. Mioduszewski (1996)
Fundamenta Mathematicae
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Continuing studies on 2-to-1 maps onto indecomposable continua having only arcs as proper non-degenerate subcontinua - called here arc-continua - we drop the hypothesis of tree-likeness, and we get some conditions on the arc-continuum image that force any 2-to-1 map to be a local homeomorphism. We show that any 2-to-1 map from a continuum onto a local Cantor bundle Y is either a local homeomorphism or a retraction if Y is orientable, and that it is a local homeomorphism if Y is not orientable. ...
Jack Goodykoontz, Sam Nadler (1984)
Fundamenta Mathematicae
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Janusz J. Charatonik (1998)
Extracta Mathematicae
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Charatonik, Janusz J., Charatonik, Włodzimierz J. (1998)
International Journal of Mathematics and Mathematical Sciences
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Charatonik, Janusz J. (2003)
International Journal of Mathematics and Mathematical Sciences
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Acosta, Gerardo, Charatonik, Janusz J. (2004)
Mathematica Pannonica
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Wojciech Dębski, J. Heath, J. Mioduszewski (1992)
Fundamenta Mathematicae
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It is known that no dendrite (Gottschalk 1947) and no hereditarily indecomposable tree-like continuum (J. Heath 1991) can be the image of a continuum under an exactly 2-to-1 (continuous) map. This paper enlarges the class of tree-like continua satisfying this property, namely to include those tree-like continua whose nondegenerate proper subcontinua are arcs. This includes all Knaster continua and Ingram continua. The conjecture that all tree-like continua have this property, stated...
H. Cook (1970)
Fundamenta Mathematicae
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Janusz Charatonik (1964)
Fundamenta Mathematicae
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