Results 31 to 40 of about 1,695,036 (291)

Invariant and Absolute Invariant Means of Double Sequences

Journal of Function Spaces and Applications, 2012
We examine some properties of the invariant mean, define the concepts of strong σ-convergence and absolute σ-convergence for double sequences, and determine the associated sublinear functionals.
Abdullah Alotaibi, M. Mursaleen, M. A. Alghamdi   +2 more
doaj   +1 more source

Some Spaces of Double Sequences Obtained through Invariant Mean and Related Concepts

Abstract and Applied Analysis, 2013
We introduce some double sequences spaces involving the notions of invariant mean (or -mean) and -convergence for double sequences while the idea of -convergence for double sequences was introduced by Çakan et al.
S. A. Mohiuddine, Abdullah Alotaibi
doaj   +1 more source

Ultimate Dynamics of the Two-Phenotype Cancer Model: Attracting Sets and Global Cancer Eradication Conditions

Mathematics, 2023
In this paper we consider the ultimate dynamics of one 4D cancer model which was created for studying the immune response to the two-phenotype tumors. Our approach is based on the localization method of compact invariant sets.
Anatolij N. Kanatnikov, Konstantin E. Starkov   +1 more
doaj   +1 more source

Convergence

Girty, 2020
A BSTRACT . Adaptive Local Iterative Filtering (ALIF) is a currently proposed novel time-frequency analysis tool. It has been empirically shown that ALIF is able to separate components and overcome the mode-mixing problem. However, so far its convergence
Antonio Cicone, Wu Hau-Tieng
semanticscholar   +1 more source

Learning Invariant Object and Spatial View Representations in the Brain Using Slow Unsupervised Learning

Frontiers in Computational Neuroscience, 2021
First, neurophysiological evidence for the learning of invariant representations in the inferior temporal visual cortex is described. This includes object and face representations with invariance for position, size, lighting, view and morphological ...
Edmund T. Rolls, Edmund T. Rolls
doaj   +1 more source

Global dynamics of an exponential system by a discrete-time Lyapunov function

Journal of Taibah University for Science, 2020
In this paper, we explore the boundedness and persistence of positive solution, existence as well as uniqueness of positive equilibrium point, existence of invariant rectangle, local and global dynamics, and rate of convergence of three-directional ...
A. Q. Khan, H. M. Arshad
doaj   +1 more source

Lacunary invariant statistical convergence of double sequences of sets

Creative Mathematics and Informatics, 2019
In this paper, we introduce the concepts of Wijsman invariant convergence, Wijsman invariant statistical convergence, Wijsman lacunary invariant convergence, Wijsman lacunary invariant statistical convergence for double sequences of sets.
F. Nuray, Uǧur Ulusu
semanticscholar   +1 more source

New Iterative Learning Control Algorithm Using Learning Gain Based on σ Inversion for Nonsquare Multi-Input Multi-Output Systems

Modelling and Simulation in Engineering, 2018
Model inversion Iterative Learning Control (ILC) for a class of nonsquare linear time variant/invariant multi-input multi-output (MIMO) systems is considered in this paper. A new ILC algorithm is developed based on σ-right inversion of nonsquare learning
Leila Noueili, Wassila Chagra, Moufida Ksouri   +2 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Invariant Discretization Schemes Using Evolution-Projection Techniques

Symmetry, Integrability and Geometry: Methods and Applications, 2013
Finite difference discretization schemes preserving a subgroup of the maximal Lie invariance group of the one-dimensional linear heat equation are determined.
Alexander Bihlo, Jean-Christophe Nave
doaj   +1 more source