Results 11 to 20 of about 483 (83)

Strongly relatively nonexpansive sequences generated by firmly nonexpansive-like mappings

open access: yesFixed Point Theory and Applications, 2014
We show that a strongly relatively nonexpansive sequence of mappings can be constructed from a given sequence of firmly nonexpansive-like mappings in a Banach space.
Koji Aoyama, Fumiaki Kohsaka
semanticscholar   +2 more sources

Nonlinear differential inequality [PDF]

open access: yes, 2010
A nonlinear inequality is formulated in the paper. An estimate of the rate of growth/decay of solutions to this inequality is obtained. This inequality is of interest in a study of dynamical systems and nonlinear evolution equations. It can be applied to
Hoang, N. S., Ramm, A. G.
core   +8 more sources

Fractal and fractional dynamics for a 3D autonomous and two-wing smooth chaotic system

open access: yesAlexandria Engineering Journal, 2020
Some existing chaotic systems cannot display dynamics with attractors showing a fractal representation. This is due, not only to the nature of the phenomenon under description, but also to the type of derivative operator used to express the whole model ...
Emile F. Doungmo Goufo
doaj   +1 more source

Discrete Modified Projection Methods for Urysohn Integral Equations with Green's Function Type Kernels [PDF]

open access: yes, 2019
In the present paper we consider discrete versions of the modified projection methods for solving a Urysohn integral equation with a kernel of the type of Green's function. For $r \geq 0,$ a space of piecewise polynomials of degree $\leq r $ with respect
Kulkarni, Rekha P., Rakshit, Gobinda
core   +4 more sources

An optimal order yielding discrepancy principle for simplified regularization of ill‐posed problems in Hilbert scales

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 39, Page 2487-2499, 2003., 2003
Recently, Tautenhahn and Hämarik (1999) have considered a monotone rule as a parameter choice strategy for choosing the regularization parameter while considering approximate solution of an ill‐posed operator equation Tx = y, where T is a bounded linear operator between Hilbert spaces.
Santhosh George, M. Thamban Nair
wiley   +1 more source

An iterative approach to a constrained least squares problem

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 8, Page 503-512, 2003., 2003
A constrained least squares problem in a Hilbert space H is considered. The standard Tikhonov regularization method is used. In the case where the set of the constraints is the nonempty intersection of a finite collection of closed convex subsets of H, an iterative algorithm is designed.
Simeon Reich, Hong-Kun Xu
wiley   +1 more source

Comparing hitting time behaviour of Markov jump processes and their diffusion approximations [PDF]

open access: yes, 2010
Markov jump processes can provide accurate models in many applications, notably chemical and biochemical kinetics, and population dynamics. Stochastic differential equations offer a computationally efficient way to approximate these processes.
Higham, D.J., Szpruch, Lukasz
core   +1 more source

Stable Approximations of a Minimal Surface Problem with Variational Inequalities

open access: yesAbstract and Applied Analysis, Volume 2, Issue 1-2, Page 137-161, 1997., 1997
In this paper we develop a new approach for the stable approximation of a minimal surface problem associated with a relaxed Dirichlet problem in the space BV(Ω) of functions of bounded variation. The problem can be reformulated as an unconstrained minimization problem of a functional 𝒥 on BV(Ω) defined by 𝒥(u) = 𝒜(u) + ∫∂Ω|Tu − Φ|, where 𝒜(u) is the ...
M. Zuhair Nashed, Otmar Scherzer
wiley   +1 more source

Strong convergence of a self-adaptive method for the split feasibility problem

open access: yes, 2013
Self-adaptive methods which permit step-sizes being selected self-adaptively are effective methods for solving some important problems, e.g., variational inequality problems.
Yonghong Yao, M. Postolache, Y. Liou
semanticscholar   +1 more source

Local Convergence and Radius of Convergence for Modified Newton Method

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2017
We investigate the local convergence of modified Newton method, i.e., the classical Newton method in which the derivative is periodically re-evaluated.
Măruşter Ştefan
doaj   +1 more source

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