Extending monotone mappings
Jan Dijkstra, Jan van Mill (1998)
Colloquium Mathematicae
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Jan Dijkstra, Jan van Mill (1998)
Colloquium Mathematicae
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Alimohammady, M., Roohi, M. (2008)
The Journal of Nonlinear Sciences and its Applications
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Verma, Ram U. (2009)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Verma, Ram U. (2011)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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S. Rolewicz (1999)
Studia Mathematica
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Let (X,d) be a metric space. Let Φ be a family of real-valued functions defined on X. Sufficient conditions are given for an α(·)-monotone multifunction to be single-valued and continuous on a weakly angle-small set. As an application it is shown that a γ-paraconvex function defined on an open convex subset of a Banach space having separable dual is Fréchet differentiable on a residual set.
Cheng, Sui Sun, Zhang, Guang (1998)
Georgian Mathematical Journal
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Ludger Rüschendorf (1995)
Applicationes Mathematicae
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Some necessary and some sufficient conditions are established for the explicit construction and characterization of optimal solutions of multivariate transportation (coupling) problems. The proofs are based on ideas from duality theory and nonconvex optimization theory. Applications are given to multivariate optimal coupling problems w.r.t. minimal -type metrics, where fairly explicit and complete characterizations of optimal transportation plans (couplings) are obtained. The results...
Khan, Safeer Hussain (2004)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
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Joram Lindenstrauss, David Preiss, Jaroslav Tišer (2010)
Journal of the European Mathematical Society
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Aleš Nekvinda, Ondřej Zindulka (2011)
Fundamenta Mathematicae
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A metric space (X,d) is monotone if there is a linear order < on X and a constant c such that d(x,y) ≤ cd(x,z) for all x < y < z in X, and σ-monotone if it is a countable union of monotone subspaces. A planar set homeomorphic to the Cantor set that is not σ-monotone is constructed and investigated. It follows that there is a metric on a Cantor set that is not σ-monotone. This answers a question raised by the second author.