Results 31 to 40 of about 1,357,535 (277)

A Method to Guarantee Local Convergence for Sequential Quadratic Programming with Poor Hessian Approximation

, 2017
Sequential Quadratic Programming (SQP) is a powerful class of algorithms for solving nonlinear optimization problems. Local convergence of SQP algorithms is guaranteed when the Hessian approximation used in each Quadratic Programming subproblem is close ...
Butler, Hans, Lazar, Mircea, Nguyen, Tuan T.   +2 more
core   +1 more source

Increasing the order of convergence of multistep methods for solving systems of equations under weak conditions

Annals of the West University of Timisoara: Mathematics and Computer Science, 2019
In the present paper, we consider a construction proposed in Xiao and Yin (2016) to improve the order of convergence of the method from p to p + 2m under weaker assumptions.
Argyros Ioannis K., George Santhosh, Erappa Shobha M.   +2 more
doaj   +1 more source

Local Linear Convergence Analysis of Primal-Dual Splitting Methods

, 2018
In this paper, we study the local linear convergence properties of a versatile class of Primal-Dual splitting methods for minimizing composite non-smooth convex optimization problems. Under the assumption that the non-smooth components of the problem are
Fadili, Jalal, Liang, Jingwei, Peyré, Gabriel   +2 more
core   +1 more source

On the Local Convergence of an Eighth-order Method for Solving Nonlinear Equations

Annals of the West University of Timisoara: Mathematics and Computer Science, 2016
We present a local convergence analysis of an eighth-order method for approximating a locally unique solution of a non-linear equation. Earlier studies such as have shown convergence of these methods under hypotheses up to the seventh derivative of the ...
Argyros Ioannis K., Kansal Munish, Kanwar V.   +2 more
doaj   +1 more source

Local Compactness in Fuzzy Convergence Spaces

Journal of Mathematical Analysis and Applications, 2002
The authors introduce and investigate two notions of locally compact fuzzy convergence spaces, continuing \textit{G. Jäger}'s paper on relative compactness [Fuzzy Sets Syst. 101, No. 1, 159-165 (1999; Zbl 0930.54008)]. Among others they show that the categories of these spaces are coreflective subcategories of the category of fuzzy convergence spaces.
Boissy, Y., Brock, P., Richardson, G.
openaire   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Expanding the Applicability of Four Iterative Methods for Solving Least Squares Problems

Annals of the West University of Timisoara: Mathematics and Computer Science, 2017
The aim of this paper is to expand the applicability of four iterative methods for solving nonlinear least squares problems. The advantages obtained under the same computational cost as in earlier studies, include: larger radius of convergence, tighter ...
Argyros Ioannis K., Sharma Janak Raj, Kumar Deepak   +2 more
doaj   +1 more source

Local convergence comparison between two novel sixth order methods for solving equations

Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2019
The aim of this article is to provide the local convergence analysis of two novel competing sixth convergence order methods for solving equations involving Banach space valued operators.
Ioannis K. Argyros, Santhosh George
doaj   +1 more source

Local Convergence for Multi-Step High Order Solvers under Weak Conditions

Mathematics, 2020
Our aim in this article is to suggest an extended local convergence study for a class of multi-step solvers for nonlinear equations valued in a Banach space.
Ramandeep Behl, Ioannis K. Argyros
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source