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An example relating the coarse and weak shape - MaRDI portal

An example relating the coarse and weak shape (Q346988)

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scientific article; zbMATH DE number 6657730
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An example relating the coarse and weak shape
scientific article; zbMATH DE number 6657730

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    An example relating the coarse and weak shape (English)
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    30 November 2016
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    The coarse-shape and weak-shape theories were introduced by \textit{N. Koceić Bilan} and the author [Glas. Mat., III. Ser. 42, No. 1, 145--187 (2007; Zbl 1131.55005)] and the author and \textit{B. Červar} [Int. J. Pure Appl. Math. 39, No. 3, 363--428 (2007; Zbl 1142.55008)], respectively. The coarse shape theory is finer than the weak-shape theory. The notions of coarse-shape-path and weak-shape-path connectedness, which were introduced by \textit{N. Koceić Bilan} and the author [Glas. Mat., III. Ser. 46, No. 2, 489--503 (2011; Zbl 1236.55017)], are coarse-shape and weak-shape invariants, respectively. In the paper under review, the author constructs a continuum that is not coarse-shape-path connected. This implies that the coarse shape theory is strictly finer than the weak-shape theory.
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    weak shape
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    coarse shape
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    weak-shape-path connectedness
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    coarse-shape-path connectedness
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