Whitney properties
J. Krasinkiewicz, Sam Nadler (1978)
Fundamenta Mathematicae
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J. Krasinkiewicz, Sam Nadler (1978)
Fundamenta Mathematicae
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J. Krasinkiewicz (1974)
Fundamenta Mathematicae
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Sam Nadler (1980)
Fundamenta Mathematicae
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Doyle, P.H. (1972)
Portugaliae mathematica
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Sam Nadler (1973)
Fundamenta Mathematicae
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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...
Sam Nadler, J. Quinn (1973)
Fundamenta Mathematicae
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James Davis, W. Ingram (1988)
Fundamenta Mathematicae
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Carl Eberhart, Sam Nadler, William Nowell (1981)
Fundamenta Mathematicae
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Acosta, Gerardo, Charatonik, Janusz J. (2004)
Mathematica Pannonica
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