Two invariants under continuity and the incomparability of fans
Janusz Charatonik (1964)
Fundamenta Mathematicae
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Janusz Charatonik (1964)
Fundamenta Mathematicae
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W. Kuperberg, A. Lelek (1976)
Fundamenta Mathematicae
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Mirosław Sobolewski (2015)
Fundamenta Mathematicae
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A continuum is a metric compact connected space. A continuum is chainable if it is an inverse limit of arcs. A continuum is weakly chainable if it is a continuous image of a chainable continuum. A space X is uniquely arcwise connected if any two points in X are the endpoints of a unique arc in X. D. P. Bellamy asked whether if X is a weakly chainable uniquely arcwise connected continuum then every mapping f: X → X has a fixed point. We give a counterexample.
J. Grispolakis, E. D. Tymchatyn (1979)
Colloquium Mathematicae
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Janusz Charatonik (1964)
Fundamenta Mathematicae
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Lončar, Ivan (2008)
Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
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Roman Mańka (1987)
Colloquium Mathematicae
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Acosta, Gerardo, Charatonik, Janusz J. (2004)
Mathematica Pannonica
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J. Krasinkiewicz, Piotr Minc (1979)
Fundamenta Mathematicae
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Jack Goodykoontz, Sam Nadler (1984)
Fundamenta Mathematicae
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T. Maćkowiak (1977)
Fundamenta Mathematicae
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A. Emeryk, A. Szymański (1977)
Colloquium Mathematicae
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J. Krasinkiewicz (1986)
Colloquium Mathematicae
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Charatonik, Janusz J., Pyrih, Pavel (2000)
Mathematica Pannonica
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