Results 11 to 20 of about 202,432 (260)
On properness of minimal surfaces with bounded curvature
Anais da Academia Brasileira de Ciências, 2003 We show that immersed minimal surfaces in the euclidean 3-space with bounded curvature and proper self intersections are proper. We also showthat restricted to wide components the immersing map is always proper, regardless the map being proper or not ...
Gregório P. Bessa +1 more
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Crisis Map Design Considering Map Cognition
ISPRS International Journal of Geo-Information, 2021 Crisis maps play a significant role in emergency responses. Users are challenged to interpret a map rapidly in emergencies, with limited visual information-processing resources and under time pressure.
Ping Du +5 more
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On definably proper maps [PDF]
Fundamenta Mathematicae, 2015 In this paper we work in o-minimal structures with definable Skolem functions and show that a continuous definable map between Hausdorff locally definably compact definable spaces is definably proper if and only if it is proper morphism in the category of definable spaces.
Edmundo, Mário J. +2 more
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Classification Theorems of Ruled Surfaces in Minkowski Three-Space
Mathematics, 2018 By generalizing the notion of the pointwise 1-type Gauss map, the generalized 1-type Gauss map has been recently introduced. Without any assumption, we classified all possible ruled surfaces with the generalized 1-type Gauss map in a 3-dimensional ...
Miekyung Choi, Young Ho Kim
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On replacing proper Dehn maps with proper embeddings [PDF]
Transactions of the American Mathematical Society, 1972 In this paper we develop algebraic and geometric conditions which imply that a given proper Dehn map can be replaced by an embedding. The embedding, whose existence is implied by our theorem, retains most of the algebraic and geometric properties required in the original proper Dehn map.
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International Journal of Mathematics and Mathematical Sciences, 1981 The relationships between a convergence space and its star compactification is studied. Special attention is given to lifting properties of this compactification.
G. D. Richardson, D. C. Kent
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Surfaces of infinite-type are non-Hopfian
Comptes Rendus. Mathématique, 2023 We show that finite-type surfaces are characterized by a topological analogue of the Hopf property. Namely, an oriented surface $\Sigma $ is of finite-type if and only if every proper map $f\colon \,\Sigma \rightarrow \Sigma $ of degree one is homotopic ...
Das, Sumanta, Gadgil, Siddhartha
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A pointfree version of remainder preservation [PDF]
Categories and General Algebraic Structures with Applications, 2013 Recall that a continuous function $fcolon Xto Y$ between Tychonoff spaces is proper if and only if the Stone extension $f^{beta}colon beta Xtobeta Y$ takes remainder to remainder, in the sense that $f^{beta}[beta X-X]subseteq beta Y-Y$.
Themba Dube, Inderasan Naidoo
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Journal of Inequalities and Applications, 2018 In this paper, firstly, a new property of the cone subpreinvex set-valued map involving the generalized contingent epiderivative is obtained. As an application of this property, a sufficient optimality condition for constrained set-valued optimization ...
Wang Chen, Zhiang Zhou
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Characterizations of Paracompact Map [PDF]
BIO Web of ConferencesParacompactness is a tool for splitting of a space. In this paper, new types of maps initiated called a paracompact map, S-paracompact mapping and β-paracompact mapping. The properties of these maps investigated.
Mahdi Jaber Saad +2 more
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