Results 81 to 90 of about 9,111 (245)
Segmental retention models for representing the hydraulic properties of evolving structured soils
Vadose Zone Journal, Volume 23, Issue 6, November/December 2024.Abstract Common parametrizations of soil hydraulic properties rely on unimodal curves, which cannot accurately represent the properties of many macroporous, aggregated, mixed, or compacted soils. Multimodal hydraulic curves are increasingly used to represent these structured soils in eco‐hydrological models, but the dynamics of the processes that shape
Filip Kiałka +4 more
wiley +1 more source
Ptychographic phase retrieval via a deep‐learning‐assisted iterative algorithm
Journal of Applied Crystallography, Volume 57, Issue 5, Page 1323-1335, October 2024.This paper proposes a ptychographic phase‐retrieval algorithm combined with a deep neural network (DNN). The proposed method allows the measurement model to be explicitly incorporated into the DNN‐based approach, improving imaging capability and robustness to changes in experimental conditions.Ptychography is a powerful computational imaging technique ...
Koki Yamada +3 more
wiley +1 more source
Strong convergence theorems for a sequence of nonexpansive mappings with gauge functions
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013 In this paper, we first prove a path convergence theorem for a nonexpansive mapping in a reflexive and strictly convex Banach space which has a uniformly Gˆateaux differentiable norm and admits the duality mapping jφ, where φ is a gauge function on [0,∞).
Cholamjiak Prasit +2 more
doaj +1 more source
Mathematical Methods in the Applied Sciences, Volume 47, Issue 11, Page 8289-8318, 30 July 2024.Dynamical systems are one of the interesting concepts where iteration algorithms and chaos can be considered together. In iteration algorithms, one of the basic concepts of fixed point theory, it is well known that the behavior of the iteration mechanism is chaotic if the original transformation is taken as chaotic. One of the natural ways to transform
Derya Sekman, Vatan Karakaya
wiley +1 more source
Effective results on compositions of nonexpansive mappings
Journal of Mathematical Analysis and Applications, 2014 This paper provides uniform bounds on the asymptotic regularity for iterations associated to a finite family of nonexpansive mappings. We obtain our quantitative results in the setting of $(r, )$-convex spaces, a class of geodesic spaces which generalizes metric spaces with a convex geodesic bicombing.
Adriana Nicolae +2 more
openaire +4 more sources
Asynchronous ADMM for nonlinear continuous‐time systems
Optimal Control Applications and Methods, Volume 45, Issue 4, Page 1375-1403, July/August 2024.This paper presents synchronous as well as asynchronous formulations of the alternating direction method of multipliers (ADMM) for solving continuous‐time nonlinear distributed model predictive control (DMPC) problems. It is shown that the optimal control problems of certain system classes can be transformed to fit the consensus‐based ADMM variant ...
Maximilian Pierer von Esch +2 more
wiley +1 more source
Abstract and Applied Analysis, 2010 Let E be a real Banach space which is uniformly smooth and uniformly convex. Let K be a nonempty, closed, and convex sunny nonexpansive retract of E, where Q is the sunny nonexpansive retraction. If E admits weakly sequentially continuous duality mapping
Yekini Shehu, Jerry N. Ezeora
doaj +1 more source
Fixed point theorems for nonexpansive mappings
Journal of Mathematical Analysis and Applications, 1972 AbstractIn this paper, we shall extend two fixed point theorems of F. E. Browder [4, Corollary to Theorem 1] and J. T. Markin [6, Theorem 1].
Chi Song Wong, Chi Song Wong
openaire +2 more sources
Journal of Applied Mathematics, 2012 We introduce a new regularization iterative algorithm for equilibrium and fixed point problems of nonexpansive mapping. Then, we prove a strong convergence theorem for nonexpansive mappings to solve a unique solution of the variational inequality and the
Shuo Sun
doaj +1 more source
On directionally nonexpansive mappings
European Journal of MathematicsAbstractIn 2000, W.A. Kirk introduced the concept of directionally nonexpansive mappings. Here, we present a more comprehensive study of this class of mappings, including a fixed-point result for them. We further present a class of mappings, properly containing the directionally nonexpansive ones, for which Kirk’s theorem still holds.
openaire +1 more source