Results 21 to 30 of about 69,929 (304)
A Mizoguchi–Takahashi Type Fixed Point Theorem in Complete Extended b-Metric Spaces
Mathematics, 2019 In this paper, we prove a new fixed point theorem for a multi-valued mapping from a complete extended b-metric space U into the non empty closed and bounded subsets of U, which generalizes Nadler’s fixed point theorem.
Nayab Alamgir +3 more
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Coincidence and fixed points of nonlinear Hybrid contractions
International Journal of Mathematics and Mathematical Sciences, 1989 In this Der, we show the existence of solutions of functional equations fx∈sx∩tx and x=fx∈sx∩Tx under certain contraction and asymptotic regularity conditions, where f, S and T are single-valued and multl-valued mappings on a metric space, respectively ...
Shyam Lal Singh, Ki Sik Ha, Yeol Je Cho
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Hilfer–Hadamard Fractional Boundary Value Problems with Nonlocal Mixed Boundary Conditions
Fractal and Fractional, 2021 This paper is concerned with the existence and uniqueness of solutions for a Hilfer–Hadamard fractional differential equation, supplemented with mixed nonlocal (multi-point, fractional integral multi-order and fractional derivative multi-order) boundary ...
Bashir Ahmad, Sotiris K. Ntouyas
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Invariant constant multi-valued mapping for the heat conductivity problem [PDF]
, 2019 We consider a heat conductivity equation with boundary control. The problems of strong and weak invariance of constant multi-valued mapping are analyzed for this equation.
Mustapokulov, K. +2 more
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Fixed point theorems for multi-valued contractive mappings and multi-valued Caristi type mappings
Journal of Mathematical Analysis and Applications, 2006 In this paper, the famous Banach contraction principle and Caristi's fixed point theorem are generalized to the case of multi-valued mappings. The results are extensions of Nadler's fixed point theorem and some Caristi type theorems for multi-valued operators.
Feng, Yuqiang, Liu, Sanyang
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Algorithms for Mobile Robot Localization and Mapping, Incorporating Detailed Noise Modeling and Multi-scale Feature Extraction [PDF]
, 2006 Mobile robot localization and mapping in unknown environments is a fundamental requirement for effective autonomous navigation. Three different approaches to localization and mapping are presented.
Pfister, Samuel Thomas
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Constrained extremal solutions of multi-valued linear inclusions in Banach spaces
Journal of Inequalities and Applications, 2016 Let X and Y be Banach spaces, L be a linear manifold in X × Y $X\times Y$ , or, equivalently, the graph of a multi-valued linear operator from X to Y, and let S be a prescribed hyperplane in X, i.e. S = g + N $S=g+N$ .
Zi Wang, Boying Wu, Yuwen Wang
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Open Mathematics, 2016 The aim of this paper is to introduce the concept of a new nonlinear multi-valued mapping so called weakly (α, ψ, ξ)-contractive mapping and prove fixed point results for such mappings in metric spaces.
Kutbi Marwan Amin, Sintunavarat Wutiphol
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Mathematics, 2020 In this paper, we set up an adequate condition for the presence of a solution of the nonlinear matrix equation. To do so, we prove the existence of fixed points for multi-valued modified F-contractions in the context of complete metric spaces, which ...
Nawab Hussain +3 more
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Convexity of Multi-valued Momentum Maps
Geometriae Dedicata, 2005 We extend the famous convexity theorem of Atiyah, Guillemin and Sternberg to the case of non-Hamiltonian actions. We show that the image of a generalized momentum map is a bounded polytope times a vector space. We prove that this picture is stable for small perturbations of the symplectic form.
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