Results 21 to 30 of about 2,173,914 (285)

On Local and Controlled Approximation Order

open access: yesJournal of Approximation Theory, 1993
The authors deal with approximations to smooth functions by objects which are essentially discrete convolutions. The purpose is to get error estimates for approximation power of dilates of these convolutions in terms of the dilation parameter \(h\).
Halton, E.J., Light, W.A.
openaire   +1 more source

Approximation Properties for Orderings on ∗ -Fields [PDF]

open access: yesTransactions of the American Mathematical Society, 1988
The goal of this paper is to extend the main theorems on approximation properties of the topological space of orderings from formally real fields to skew fields with an involution ∗ ^{\ast } .
openaire   +1 more source

Order of Approximation by a New Univariate Kantorovich Type Operator

open access: yesInternational Journal of Analysis and Applications, 2023
In order to approximate Lebesgue integrable functions on [0, 1], a sequence of linear positive integral operators of Kantorovich type Lσf (x) with a parameter sσ is introduced.
Asha Ram Gairola   +4 more
doaj   +1 more source

The Chebyshev Set Problem in Riesz Space

open access: yesJournal of Function Spaces, 2022
In this paper, we mainly study the best approximation theory in Riesz space, which is not constructed by the norm, but only rely on the order structure.
Shengwei Wu   +4 more
doaj   +1 more source

The precision of slow-roll predictions for the CMBR anisotropies [PDF]

open access: yes, 2000
Inflationary predictions for the anisotropy of the cosmic microwave background radiation (CMBR) are often based on the slow-roll approximation. We study the precision with which the multipole moments of the temperature two-point correlation function can ...
Martin, Jerome, Schwarz, Dominik
core   +2 more sources

Hamiltonian Perturbations at the Second-Order Approximation [PDF]

open access: yesAnnales Henri Poincaré, 2020
Integrability condition of Hamiltonian perturbations of integrable Hamiltonian PDEs of hydrodynamic type up to the second order approximation is considered.
openaire   +3 more sources

Higher order approximation of isochrons

open access: yes, 2009
Phase reduction is a commonly used techinque for analyzing stable oscillators, particularly in studies concerning synchronization and phase lock of a network of oscillators.
Daisuke Takeshita   +7 more
core   +1 more source

Numerical Approximation of Fractional-Order Volterra Integrodifferential Equation

open access: yesJournal of Function Spaces, 2020
Laplace transform is a powerful tool for solving differential and integrodifferential equations in engineering sciences. The use of Laplace transform for the solution of differential or integrodifferential equations sometimes leads to the solutions in ...
Xiaoli Qiang   +3 more
doaj   +1 more source

New neighborhood based rough sets [PDF]

open access: yes, 2015
Neighborhood based rough sets are important generalizations of the classical rough sets of Pawlak, as neighborhood operators generalize equivalence classes.
I Couso   +11 more
core   +1 more source

ON THE ORDER OF METRIC APPROXIMATION OF MAXIMAL LINKED SYSTEMS AND CAPACITARIAN DIMENSIONS

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2019
It is shown that in any metric compact space X there exists a countable closed subset F whose upper capacitarian dimension dimBF is equal to any preassigned non-negative number not exceeding the upper capacitarian dimension of X.
Alexander Ivanov, Ol’ga Fomkina
doaj   +1 more source

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