Results 31 to 40 of about 9,849,612 (295)

Direct Estimate for Some Operators of Durrmeyer Type in Exponential Weighted Space

open access: yesDemonstratio Mathematica, 2014
In the present paper, we investigate the convergence and the approximation order of some Durrmeyer type operators in exponential weighted space. Furthermore, we obtain the Voronovskaya type theorem for these operators.
Krech Grażyna, Wachnicki Eugeniusz
doaj   +1 more source

Two approximation methods for fractional order Pseudo-Parabolic differential equations

open access: yesAlexandria Engineering Journal, 2022
In this study, fractional order pseudo-parabolic partial differential equation defined by Caputo derivative is investigated with initial-boundary conditions. Modified double Laplace decomposition method is used to find the exact solution of this equation.
Mahmut. Modanli   +4 more
doaj   +1 more source

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

A High-order Coupled Compact Integrated RBF Approximation Based Domain Decomposition Algorithm for Second-order Differential Problems [PDF]

open access: yes, 2015
This paper presents a high-order coupled compact integrated RBF (CC IRBF) approximation based domain decomposition (DD) algorithm for the discretisation of second-order differential problems.
Tien, C. M. T.   +9 more
core   +1 more source

Discontinuous Galerkin Finite Element Approximation of Nonlinear Second-Order Elliptic and Hyperbolic Systems [PDF]

open access: yes, 2006
We develop the convergence analysis of discontinuous Galerkin finite element approximations to second-order quasilinear elliptic and hyperbolic systems of partial differential equations of the form, respectively, $-\sum_{\alpha=1}^d \partial_{x_\alpha ...
Suli, Endre   +5 more
core   +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 Ordering Principle in a Fragment of Approximate Counting [PDF]

open access: yesACM Transactions on Computational Logic, 2014
The ordering principle states that every finite linear order has a least element. We show that, in the relativized setting, the surjective weak pigeonhole principle for polynomial time functions does not prove a Herbrandized version of the ordering principle over T 1 2 .
Atserias, Albert, Thapen, Neil
openaire   +4 more sources

Numerical approximation for a variable-order nonlinear reaction-subdiffusion equation [PDF]

open access: yes, 2013
Natural Science Foundation of Fujian province [2009J01014]Fractional reaction-subdiffusion equations are widely used in recent years to simulate physical phenomena. In this paper, we consider a variable-order nonlinear reaction-subdiffusion equation.
Turner, I.   +6 more
core   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

Biermann interpolation of Birkhoff type

open access: yesJournal of Numerical Analysis and Approximation Theory, 2005
If \(P_{0},P_{1},...,P_{r}\) and \(Q_{0},Q_{1},...,Q_{r}\) are Birkhoff univariate projectors which form the chains\[P_{0}\le P_{1}\le\dots\le P_{r},\quad Q_{0}\le Q_{1}\le\dots\le Q_{r},\]we can define the Biermann operator of Birkhoff type\[B_{r}^{B ...
Marius Birou
doaj   +2 more sources

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