Results 221 to 230 of about 202,120 (260)
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A Note on Proper Maps of Locales
Applied Categorical Structures, 2009Proper morphisms of locales correspond to perfect maps of topological spaces. The paper characterizes proper morphisms of locales in terms of extensions between compactifications.
Wei He, Maokang Luo
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A-properness of contractive and condensing maps
Nonlinear Analysis: Theory, Methods & Applications, 2002The authors study \(A\)-properness of condensing perturbations of the identity and related maps in a possibly non-reflexive Banach space. An application to the strongly nonlinear differential equation \[ x''(t)+ f(t, x(x), x'(t),x''(t))\quad\text{on } [0,1], \] subject to Dirichlet boundary conditions, is given as well.
Lan, Kunquan, Webb, Jeffrey R. L.
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Properness of Polynomial Maps with Newton Polyhedra
Arnold Mathematical Journal, 2022zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fukui, Toshizumi, Tsuchiya, Takeki
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A Note on Semialgebraically Proper Maps
Ukrainian Mathematical Journal, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The Topological Degree of A-Proper Maps
Canadian Journal of Mathematics, 1971Recently several fixed-point theorems have been proved for new classes of non-compact maps between Banach spaces. First, Petryshyn [15] generalized the concept of compact and quasi-compact maps when he introduced the P-compact maps and proved a fixed-point theorem for this class of maps.
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Fuzzy convergence: open and proper maps
Fuzzy Sets and Systems, 2005The authors define proper and open maps between probabilistic convergence spaces and study an extension of these concepts to fuzzy convergence spaces. They show that proper maps are productive and preserve closure, regularity and local precompactness, that open maps are finitely productive and preserve neighbourhoods, that projection maps are open, but
Richardson, G., Xue, Q., Zhang, J.
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ON THE PROPER MAP FOR DETERMINING THE LOCATION OF EARTHQUAKES
Annals of the American Association of Geographers, 1912exaly +2 more sources
Uniqueness and Regularity of Proper Harmonic Maps
The Annals of Mathematics, 1993Harmonic maps \(u:M^ m \to N^ n\) are critical points of the energy functional \(E(u)=\int_ Me(u)(x)dx\) where \(e(u)(x)\) is the energy density. The paper is devoted to th study of proper harmonic maps between hyperbolic spaces. One identifies hyperbolic space \(\mathbb{H}^ n\) via the Poincaré model with the unit ball \(D^ n \subset \mathbb{R}^ n ...
Li, Peter, Tam, Luen-Fai
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2008
Let X and Y be topological spaces. A continuous map f: X → Y is said to be proper if f −1(K) is compact in X for every compact K ⊂ Y.
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Let X and Y be topological spaces. A continuous map f: X → Y is said to be proper if f −1(K) is compact in X for every compact K ⊂ Y.
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Global Properties of Proper Lipschitzian Maps
SIAM Journal on Mathematical Analysis, 1983In this paper, the author uses a generalized set-valued derivative and a special notion of degree for Lipschitz functions from \({\mathbb{R}}^ n\) into \({\mathbb{R}}^ n\) to study the ontoness of \(f\). Under suitable assumptions, certain existing results dealing with \(Df\) when \(f\) is \(C^ 1\) are extended to the generalized derivative \(\partial ...
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