Results 31 to 40 of about 1,845 (184)
Tychonoff's Theorem for Hyperspaces [PDF]
Proceedings of the American Mathematical Society, 1973 If exp (
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Selection principles and bitopological hyperspaces
Applied General Topology, 2023 In this paper we continue to research relationships between closure-type properties of hyperspaces over a space X and covering properties of X. For a Hausdorff space X we denote by 2X the family of all closed subsets of X.
Alexander V. Osipov
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Topology and its Applications, 2004 Given a metric continuum \(X\), let \(2^X\), \(C(X)\) and \(C_2(X)\) denote the hyperspaces of all nonempty closed subsets, subcontinua, and closed subsets with at most two components of \(X\), respectively (with the Hausdorff metric). For a fixed point \(p \in X\) the symbols \(2^X_p\), \(C(p,X)\) and \(C_2(p,X)\) denote the subspaces consisting of ...
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A parsimonious structure model for the icosahedral quasicrystal Cd5.7Yb
Acta Crystallographica Section A, EarlyView.The paper presents a parsimonious structure model for the icosahedral Cd5.7Yb quasicrystal. It employs only spherical and elliptical occupation domains, which significantly decreases the number of parameters and the required calculation effort. Still, the model describes the characteristic structural features with considerable accuracy.A compact ...
M. Feuerbacher
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Contractibility of the hyperspace of meager subcontinua, two examples
Applied General TopologyGiven a metric continuum X, the hyperspace of meager subcontinua of X, denoted by M(X), is the collection of all subcontinua of X with empty interior. Answering questions by Norberto Ordo˜nez, in this paper we construct two dendroids showing that there ...
Alejandro Illanes +1 more
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Partial actions of groups on hyperspaces
Applied General Topology, 2022 Let X be a compact Hausdorff space. In this work we translate partial actions of X to partial actions on some hyperspaces determined by X, this gives an endofunctor 2- in the category of partial actions on compact Hausdorff spaces which generates a monad
Luis Martínez +2 more
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VOID URBANISM: Unbuilt New Cities and State Formation in the Democratic Republic of Congo
International Journal of Urban and Regional Research, EarlyView.Abstract Based on an analysis of the planning process behind Kitoko City in the Democratic Republic of Congo—a new city project officially launched in 2019 but never implemented—this article examines the political, social, and spatial effects generated by urban initiatives that remain at the stage of intention. It investigates how such unbuilt projects
Patrick Belinga Ondoua
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Astrotheology: The natural interface between hyperspace and the Trinity
Acta Theologica, 2023 Over the past few decades, physicists are seeking a unifying theory that could encapsulate the theories of general relativity and quantum mechanics, our understanding of the very big and the infinitesimal small, into one all-inclusive theory. This quest
A.C. Pieterse
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On the compactness of the hyperspace of faces [PDF]
Pacific Journal of Mathematics, 1977 By a flat we mean a translate of a subspace of R and by a hyperplane, a flat of dimension d — 1. If X is a compact convex subset of R the symbols dim (X), rel int (X), and rel bd (X) denote respectively, the dimension of the flat generated by X, the interior, and the boundary of X with respect to the flat X generates.
Reiter, H. B., Stavrakas, N. M.
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Australian Journal of Politics &History, EarlyView.ABSTRACT This article explores Australian media commentary on white Rhodesians migrating to Australia, focusing on the period of Malcolm Fraser's prime ministership (1975–1983). The main argument is that the Australian media debates about whether to classify white Rhodesians as ‘migrants’ or ‘refugees’ were not merely semantic but reflected a deeper ...
George Bishi, Ana Stevenson
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