Results 51 to 60 of about 1,086,676 (318)
Journal of Inequalities and Applications, 2019 It is well known that the concept (generalized) asymptotically nonexpansive is closely related to the theory of fixed points in Banach spaces, and the implicit midpoint rule is one of the powerful numerical methods for solving differential equations. The
Ting-jian Xiong, Heng-you Lan
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Fixed point theorems for enriched Kannan mappings in CAT(0) spaces
Fixed Point Theory and Algorithms for Sciences and Engineering, 2023 We present enriched Kannan and enriched Bianchini mappings in the framework of unique geodesic spaces. For such mappings, we establish the existence and uniqueness of a fixed point in the setting of CAT(0) spaces and show that an appropriate ...
A. Y. Inuwa +3 more
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An exotic deformation of the hyperbolic space [PDF]
, 2014 On the one hand, we construct a continuous family of non-isometric proper CAT(-1) spaces on which the isometry group ${\rm Isom}(\mathbf{H}^{n})$ of the real hyperbolic $n$-space acts minimally and cocompactly.
Monod, Nicolas, Py, Pierre
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Closed subsets of a CAT(0) 2-complex are intrinsically CAT(0) [PDF]
Algebr. Geom. Topol. 21 (2021) 1723-1744, 2019 Let k be at most 0, and let X be a locally-finite CAT(k) polyhedral 2-complex X, each face with constant curvature k. Let E be a closed, rectifiably-connected subset of X with trivial first singular homology. We show that E, under the induced path metric, is a complete CAT(k) space.
arxiv +1 more source
Halpern's Iteration in CAT(0) Spaces [PDF]
Fixed Point Theory and Applications, 2009 AbstractMotivated by Halpern's result, we prove strong convergence theorem of an iterative sequence in CAT(0) spaces. We apply our result to find a common fixed point of a family of nonexpansive mappings. A convergence theorem for nonself mappings is also discussed.
openaire +3 more sources
Journal of Function Spaces, 2018 This paper is for the purpose of introducing and studying a class of new two-step viscosity iteration approximation methods for finding fixed points of set-valued nonexpansive mappings in CAT(0) spaces.
Ting-jian Xiong, Heng-you Lan
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On Ptolemaic metric simplicial complexes [PDF]
, 2009 We show that under certain mild conditions, a metric simplicial complex which satisfies the Ptolemy inequality is a CAT(0) space. Ptolemy's inequality is closely related to inversions of metric spaces. For a large class of metric simplicial complexes, we
Buckley +5 more
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Intrinsic Rank in CAT(0) Spaces
, 2022 19 ...
Ontaneda, Pedro, Ricks, Russell
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-Convergence Problems for Asymptotically Nonexpansive Mappings in CAT(0) Spaces
Abstract and Applied Analysis, 2013 New △-convergence theorems of iterative sequences for asymptotically nonexpansive mappings in CAT(0) spaces are obtained. Consider an asymptotically nonexpansive self-mapping of a closed convex subset of a CAT(0) space . Consider the iteration process ,
Luo Yi Shi, Ru Dong Chen, Yu Jing Wu
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Common Attractive Points of Generalized Hybrid Multi-Valued Mappings and Applications
Mathematics, 2020 In this paper, we first propose the concepts of (ζ,η,λ,π)-generalized hybrid multi-valued mappings, the set of all the common attractive points (CAf,g) and the set of all the common strongly attractive points (CsAf,g), respectively for the multi-valued ...
Lili Chen, Ni Yang, Jing Zhou
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