Results 21 to 30 of about 488 (225)

The First Negative Moment of Skew-t and Generalized Student's t-Distributions in the Principal Value Sense

open access: yesJournal of Applied Mathematics, 2013
The (Cauchy) principal value is a method for assigning values to certain improper integrals which would otherwise be undefined. Using the principal value sense, this study derives an explicit expression of the first negative moment of skew-t and ...
Chien-Yu Peng
doaj   +1 more source

Principal values for the Cauchy integral and rectifiability [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
We give a geometric characterization of those positive finite measures μ \mu
openaire   +2 more sources

Extrapolation Algorithm for Computing Multiple Cauchy Principal Value Integrals [PDF]

open access: yesMathematical Problems in Engineering, 2020
In this paper, the computation of multiple (including two dimensional and three dimensional) Cauchy principal integral with generalized composite rectangle rule was discussed, with the density function approximated by the middle rectangle rule, while the singular kernel was analytically calculated.
Jin Li, Yongling Cheng
openaire   +1 more source

On integral equations with Weakly Singular kernel by using Taylor series and Legendre polynomials

open access: yesOpen Physics, 2015
This paper is concerned with the numerical solution for a class of weakly singular Fredholm integral equations of the second kind. The Taylor series of the unknown function, is used to remove the singularity and the truncated Taylor series to second ...
Babolian Esmail   +4 more
doaj   +1 more source

Uniform convergence results for Cauchy principal value integrals [PDF]

open access: yesMathematics of Computation, 1991
A general uniform convergence theorem for numerical integration of Cauchy principal value integrals is proved. Seven special instances of this theorem are given as corollaries.
openaire   +1 more source

A direct method for the construction of gaussian quadrature rules for Cauchy type and finite-part integrals

open access: yesJournal of Numerical Analysis and Approximation Theory, 1983
It is shown how the construction of Gaussian quadrature rules for Cauchy type principal value integrals, as well as for finite-part integrals with an algebraic singularity, can be based on the theory of Gaussian quadrature rules for ordinary integrals ...
N. I. Ioakimidis
doaj   +2 more sources

Generalized noninterpolatory rules for Cauchy principal value integrals [PDF]

open access: yesMathematics of Computation, 1990
Consider the Cauchy principal value integral \[ I ( k f ;
openaire   +1 more source

Modified Gauss-Legendre, Lobatto and Radau cubature formulas for the numerical evaluation of 2-D singular integrals

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
A numerical technique, first reported in 1979 in refs.[1] and [2], for the numerical evaluation of two-dimensional Cauchy-type principal-value integrals, is extended in this paper to include several cubature formlas of the Radau and Lobatto types.
P. S. Theocaris
doaj   +1 more source

On quadrature for Cauchy principal value integrals of oscillatory functions

open access: yesJournal of Computational and Applied Mathematics, 2003
Based on a quadrature suggested by \textit{G. E. Okecha} [Math. Comput. 49, 259--268 (1987; Zbl 0634.65013)] the authors deal with the numerical evaluation of Cauchy principal value integrals \[ H^\omega(g; t)= \lim_{\varepsilon\to 0^+}\,\int_{| x-t|\geq \varepsilon} {g(x)\over x- t} e^{i\omega x} \,dx\qquad (t\in (-1,1)).
M. R. CAPOBIANCO, CRISCUOLO, GIULIANA
openaire   +4 more sources

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

open access: yesAdvanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source

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