Whitney-reversible properties
Sam Nadler (1980)
Fundamenta Mathematicae
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Sam Nadler (1980)
Fundamenta Mathematicae
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A. Lelek, D. Zaremba (1962)
Fundamenta Mathematicae
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J. Krasinkiewicz (1974)
Fundamenta Mathematicae
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Jerzy Krzempek (2010)
Colloquium Mathematicae
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Fedorchuk's fully closed (continuous) maps and resolutions are applied in constructions of non-metrizable higher-dimensional analogues of Anderson, Choquet, and Cook's rigid continua. Certain theorems on dimension-lowering maps are proved for inductive dimensions and fully closed maps from spaces that need not be hereditarily normal, and some of the examples of continua we construct have non-coinciding dimensions.
Jerzy Krzempek (2004)
Bulletin of the Polish Academy of Sciences. Mathematics
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It is shown that a certain indecomposable chainable continuum is the domain of an exactly two-to-one continuous map. This answers a question of Jo W. Heath.
P. Spyrou (1992)
Matematički Vesnik
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Hisao Kato (1996)
Fundamenta Mathematicae
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A homeomorphism f:X → X of a compactum X with metric d is expansive if there is c > 0 such that if x,y ∈ X and x ≠ y, then there is an integer n ∈ ℤ such that . A homeomorphism f: X → X is continuum-wise expansive if there is c > 0 such that if A is a nondegenerate subcontinuum of X, then there is an integer n ∈ ℤ such that . Clearly, every expansive homeomorphism is continuum-wise expansive, but the converse assertion is not true. In [6], we defined the notion of chaotic continua...
Witold Bula (1981)
Colloquium Mathematicae
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S. Drobot (1971)
Applicationes Mathematicae
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T. Maćkowiak (1987)
Fundamenta Mathematicae
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Sergio Macías, Patricia Pellicer-Covarrubias (2012)
Colloquium Mathematicae
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We continue the study of 1/2-homogeneity of the hyperspace suspension of continua. We prove that if X is a decomposable continuum and its hyperspace suspension is 1/2-homogeneous, then X must be continuum chainable. We also characterize 1/2-homogeneity of the hyperspace suspension for several classes of continua, including: continua containing a free arc, atriodic and decomposable continua, and decomposable irreducible continua about a finite set.
M. Proffitt (1971)
Fundamenta Mathematicae
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J. Krasinkiewicz (1974)
Colloquium Mathematicae
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Sergio Macías (2007)
Colloquium Mathematicae
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We prove a decomposition theorem for a class of continua for which F. B.. Jones's set function 𝓣 is continuous. This gives a partial answer to a question of D. Bellamy.
Alessandro Andretta (2018)
Matematica, Cultura e Società. Rivista dell'Unione Matematica Italiana
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We give an overview of the continuum hypothesis, of its impact on mathematics, and on the foundations of set theory.