Results 1 to 10 of about 357,525 (144)

Characterization of Best Approximation Points with Lattice Homomorphisms

open access: yesJournal of Mathematical Extension, 2014
In this paper we prove some characterization theorems in the theory of best approximation in Banach lattices. We use a new idea for finding the best approximation points in an ideal.
H. R. Khademzadeh, H. Mazaheri
doaj   +1 more source

A Characterization of Best Φ-Approximants [PDF]

open access: yesTransactions of the American Mathematical Society, 1981
Let T T be an operator from an Orlicz space L Φ {L_\Phi } into itself. It is shown in this paper that four algebraic conditions and one integration condition assure that T T is the best Φ \Phi -approximator, given a suitable σ \sigma
Landers, D., Rogge, L.
openaire   +1 more source

Fuzzy Best Simultaneous Approximation of a Finite Numbers of Functions [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
Fuzzy best simultaneous approximation of a finite number of functions is considered. For this purpose, a fuzzy norm on $Cleft (X, Y right )$ and its fuzzy dual space and also the  set of subgradients of a fuzzy norm are introduced.
Hossain Alizadeh Nazarkandi
doaj   +1 more source

Approximation by trigonometric polynomials in the variable exponent weighted Morrey spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
In this paper we investigate the best approximation by trigonometric polynomials in the variable exponent weighted Morrey spaces ${\mathcal{M}}_{p(\cdot),\lambda(\cdot)}(I_{0},w)$, where $w$ is a weight function in the Muckenhoupt $A_{p(\cdot)}(I_{0 ...
Z. Cakir   +3 more
doaj   +1 more source

Non-Destructive Post-Harvest Tomato Mass Estimation Model Based on Its Area via Computer Vision and Error Minimization Approaches

open access: yesIEEE Access, 2022
Tomato commercialization in Mexican and Latin-American markets is economically affected by three main physical aspects of the fruit: ripening time, size, and mass. Digital image processing combined with mathematical models and machine learning approaches
F. J. Bucio   +5 more
doaj   +1 more source

Mathematical Neural Networks

open access: yesAxioms, 2022
ANNs succeed in several tasks for real scenarios due to their high learning abilities. This paper focuses on theoretical aspects of ANNs to enhance the capacity of implementing those modifications that make ANNs absorb the defining features of each ...
Julia García Cabello
doaj   +1 more source

The Characterization of Best Nonlinear Tchebycheff Approximations [PDF]

open access: yesTransactions of the American Mathematical Society, 1960
1.1. Let two real functions f and F be given such that f=f(x) is a continuous function for x [0, 1] and F== F(al, a2, * * *, a n, x) is a continuous function of n parameters and x [0, 1]. For simplicity of notation the point (a', a2, * * , an) in Euclidean n-space, En, is denoted by a.
openaire   +2 more sources

Strong unicity of best approximations : a numerical aspect [PDF]

open access: yes, 1983
The set of functions in C(T) which have a strongly unique best approximation from a given finite-dimensional subspace is denoted by SU(G). Since strong unicity plays an important role in numerical computations and since there the functions are only known
Nürnberger, Günther
core   +1 more source

Maximal Regularity of the Discrete Harmonic Oscillator Equation

open access: yesAdvances in Difference Equations, 2009
We give a representation of the solution for the best approximation of the harmonic oscillator equation formulated in a general Banach space setting, and a characterization of lp-maximal regularity—or well posedness—solely in terms of R ...
Airton Castro   +2 more
doaj   +2 more sources

Optimal Selection of the Control Strategy for Dual-Axis Solar Tracking Systems

open access: yesIEEE Access, 2023
This article proposes a methodology for the optimal selection of the control strategy for two-axis solar tracking systems, that simultaneously reduces tracking error and energy consumption in existing solar tracking systems, improving their overall ...
Sergio I. Palomino-Resendiz   +4 more
doaj   +1 more source

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