Results 21 to 30 of about 23,143 (202)

On osculatory interpolation by trigonometric polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
A short and simple proof is given that osculatory interpolation by trigonometric polynomials is always possible.
D. J. Newman, L. A. Rubel
doaj   +1 more source

Numerical Solution of Stiff and Oscillatory Problems using Third Derivative Trigonometrically Fitted Block Method

open access: yesJournal of Nigerian Society of Physical Sciences, 2022
This paper considered the formulation of continuous third derivative trigonometrically fitted method for the solution of oscillatory first order initial value problems using the technique of interpolation and collocation of the approximate solution by ...
M. Kida   +3 more
doaj   +1 more source

Interpolation with circular basis functions [PDF]

open access: yes, 2006
In this paper we consider basis function methods for solving the problem of interpolating data over distinct points on the unit circle. In the special case where the points are equally spaced we can appeal to the theory of circulant matrices which ...
Hubbert, Simon, Muller, S.
core   +1 more source

Rotation-Angle Solution and Singularity Handling of Five-Axis Machine Tools for Dual NURBS Interpolation

open access: yesMachines, 2023
Dual NURBS interpolation has been proven an essential technique for high-speed precision machining of complex surfaces. The solution of rotation angles and their derivatives is the basis of kinematic transformation and feedrate optimization in dual NURBS
Pengpeng Sun   +4 more
doaj   +1 more source

A Study of Different Modeling Choices For Simulating Platelets Within the Immersed Boundary Method [PDF]

open access: yes, 2012
The Immersed Boundary (IB) method is a widely-used numerical methodology for the simulation of fluid-structure interaction problems. The IB method utilizes an Eulerian discretization for the fluid equations of motion while maintaining a Lagrangian ...
Fogelson, Aaron L.   +3 more
core   +3 more sources

Trigonometric interpolation

open access: yesJournal of Mathematical Analysis and Applications, 1969
Journal of Mathematical Analysis and Applications 28 (1969) 652-659. doi:10.1016/0022-247X(69)90018-3 ; Received by publisher: 0000-01-01 ; Harvest Date: 2016-01-04 12:20:16 ; DOI:10.1016/0022-247X(69)90018-3 ; Page Range: 652 ...
Department of Mathematics, University of Florida, Gainesville, Florida USA ( host institution )   +1 more
openaire   +3 more sources

Subperiodic Dubiner distance, norming meshes and trigonometric polynomial optimization [PDF]

open access: yes, 2018
We extend the notion of Dubiner distance from algebraic to trigonometric polynomials on subintervals of the period, and we obtain its explicit form by the Szego variant of Videnskii inequality.
Vianello, Marco
core   +1 more source

About Nodal Systems for Lagrange Interpolation on the Circle

open access: yesJournal of Applied Mathematics, 2012
We study the convergence of the Laurent polynomials of Lagrange interpolation on the unit circle for continuous functions satisfying a condition about their modulus of continuity.
E. Berriochoa   +2 more
doaj   +1 more source

Extremal functions in de Branges and Euclidean spaces [PDF]

open access: yes, 2014
In this work we obtain optimal majorants and minorants of exponential type for a wide class of radial functions on $\mathbb{R}^N$. These extremal functions minimize the $L^1(\mathbb{R}^N, |x|^{2\nu + 2 - N}dx)$-distance to the original function, where ...
Carneiro, Emanuel, Littmann, Friedrich
core   +1 more source

C1 triangular Coons surface construction and image interpolation based on new Side-Side and Side-Vertex interpolation operators.

open access: yesPLoS ONE, 2020
In this paper, a new class of rational quadratic/linear trigonometric Hermite functions with two shape parameters is proposed. Based on these Hermite functions, new improved first class of Side-Side (FCSS), second class of Side-Side (SCSS), first class ...
Mingshan Qiu, Yuanpeng Zhu
doaj   +1 more source

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