Results 111 to 120 of about 789 (216)

An optimal quadrature formula exact to the exponential function by the phi function method

open access: yes
The numerical integration of definite integrals is essential in fundamental and applied sciences. The accuracy of approximate integral calculations is contingent upon the initial data and specific requirements, leading to the imposition of diverse ...
BABAEV, Samandar   +3 more
core   +1 more source

Computing rational Gauss-Chebyshev quadrature formulas with complex poles: the algorithm

open access: yes, 2009
We provide an algorithm to compute arbitrarily many nodes and weights for rational Gauss-Chebyshev quadrature formulas integrating exactly in spaces of rational functions with complex poles outside [-1,1].
Bultheel, Adhemar   +2 more
core   +1 more source

The set of anti-Gaussian quadrature rules and corresponding multiple orthogonal polynomials

open access: yes, 2023
Laurie in ([1]) introduced anti-Gaussian quadrature rule, that gives an error equal in magnitude but of opposite sign to that of the corresponding Gaussian quadrature rule.
Petrovic, Nevena   +3 more
core  

Construction of lattice rules for multiple integration based on a weighted discrepancy

open access: yes, 2008
High-dimensional integrals arise in a variety of areas, including quantum physics, the physics and chemistry of molecules, statistical mechanics and more recently, in financial applications. In order to approximate multidimensional integrals, one may use
Sinescu, Vasile
core  

Quadrature formulas for calculating the hadamard integral of a special form

open access: yes, 2020
© 2016, International Journal of Pharmacy and Technology. All rights reserved.Currently, the issues related to finding solutions to some economic problems, such as problems pertaining to the queuing systems are of great interest. These problems, in turn,
Galimyanov A.   +3 more
core  

An Optimal Quadrature Formula Exact to the Exponential Function

open access: yesПроблемы вычислительной и прикладной математики
Numerical integration of definite integrals plays a crucial role in both fundamental and applied sciences. The precision of approximate integral calculations depends on the initial data and specific conditions, which impose various requirements on the resulting computations.
A.R. Hayotov, M.Sh. Shomalikova
openaire   +1 more source

An Ostrowski Type Inequality for Weighted Mappings with Bounded Second Derivatives

open access: yes, 1998
A weighted integral inequality of Ostrowski type for mappings whose second derivatives are bounded is proved.
Roumeliotis, John   +2 more
core  

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