Results 21 to 30 of about 22,208 (203)

An adaptive pseudo-spectral method for reaction diffusion problems [PDF]

open access: yes, 1987
The spectral interpolation error was considered for both the Chebyshev pseudo-spectral and Galerkin approximations. A family of functionals I sub r (u), with the property that the maximum norm of the error is bounded by I sub r (u)/J sub r, where r is an
Bayliss, A.   +3 more
core   +2 more sources

Certain Chebyshev-Type Inequalities Involving Fractional Conformable Integral Operators

open access: yesMathematics, 2019
Since an interesting functional by P.L. Chebyshev was presented in the year 1882, many results, which are called Chebyshev-type inequalities, have been established. Some of these inequalities were obtained by using fractional integral operators.
Gauhar Rahman   +4 more
doaj   +1 more source

Tutte's invariant approach for Brownian motion reflected in the quadrant [PDF]

open access: yes, 2016
We consider a Brownian motion with drift in the quarter plane with orthogonal reflection on the axes. The Laplace transform of its stationary distribution satisfies a functional equation, which is reminiscent from equations arising in the enumeration of (
Franceschi, Sandro, Raschel, Kilian
core   +5 more sources

Functional inequalities for the Bickley function [PDF]

open access: yes, 2013
In this paper our aim is to deduce some complete monotonicity properties and functional inequalities for the Bickley function. The key tools in our proofs are the classical integral inequalities, like Chebyshev, H\"older-Rogers, Cauchy-Schwarz, Carlson ...
Baricz, Árpád, Pogány, Tibor K.
core   +2 more sources

Chebyshev Approximations for the Psi Function [PDF]

open access: yesMathematics of Computation, 1973
Rational Chebyshev approximations to the psi (digamma) function are presented for .5 ≦ x ≦ 3.0 .5 \leqq x \leqq 3.0 , and 3.0 ≦ x 3.0 \leqq x . Maximum relative errors range down to the order of 10 − 20
Cody, W. J.   +2 more
openaire   +1 more source

Certain Inequalities Pertaining to Some New Generalized Fractional Integral Operators

open access: yesFractal and Fractional, 2021
In this paper, we introduce the generalized left-side and right-side fractional integral operators with a certain modified ML kernel. We investigate the Chebyshev inequality via this general family of fractional integral operators.
Hari Mohan Srivastava   +3 more
doaj   +1 more source

A spectral approach to a constrained optimization problem for the Helmholtz equation in unbounded domains [PDF]

open access: yes, 2014
We study some convergence issues for a recent approach to the problem of transparent boundary conditions for the Helmholtz equation in unbounded domains.
Ciraolo, Giulio   +2 more
core   +2 more sources

Chebyshev’s bias for analyticL-functions [PDF]

open access: yesMathematical Proceedings of the Cambridge Philosophical Society, 2019
AbstractWe discuss the generalizations of the concept of Chebyshev’s bias from two perspectives. First, we give a general framework for the study of prime number races and Chebyshev’s bias attached to generalL-functions satisfying natural analytic hypotheses.
openaire   +2 more sources

Orthogonal Functions Solving Linear functional Differential EquationsUsing Chebyshev Polynomial

open access: yesمجلة بغداد للعلوم, 2008
A method for Approximated evaluation of linear functional differential equations is described. where a function approximation as a linear combination of a set of orthogonal basis functions which are chebyshev functions .The coefficients of the ...
Baghdad Science Journal
doaj   +1 more source

On the Chebyshev functional [PDF]

open access: yesMathematical Inequalities & Applications, 2007
In this paper we prove an inequality for certain orthoprojectors. For orthoprojectors of rank one we obtain a Chebyshev type inequality. Gruss-Lupas type inequalities are also discussed. Mathematics subject classification (2000): 26D15, 26D20, 15A39, 06F20.
openaire   +1 more source

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