Results 31 to 40 of about 315 (56)

Evaluation of tension splines [PDF]

open access: yes, 1999
Tension spline of order $k$ is a function that, for a given partition mbox ...
I. Beroš, M. Marušić
core   +1 more source

Curve network interpolation by $C^1$ quadratic B-spline surfaces

open access: yes, 2015
In this paper we investigate the problem of interpolating a B-spline curve network, in order to create a surface satisfying such a constraint and defined by blending functions spanning the space of bivariate $C^1$ quadratic splines on criss-cross ...
Dagnino, Catterina   +2 more
core   +1 more source

Isogeometric Boundary Elements in Electromagnetism: Rigorous Analysis, Fast Methods, and Examples

open access: yes, 2019
We present a new approach to three-dimensional electromagnetic scattering problems via fast isogeometric boundary element methods. Starting with an investigation of the theoretical setting around the electric field integral equation within the ...
Dölz, Jürgen   +3 more
core   +1 more source

Lower bounds for the approximation with variation-diminishing splines [PDF]

open access: yes
We prove lower bounds for the approximation error of the variation-diminishing Schoenberg operator on the interval [0, 1] in terms of classical moduli of smoothness depending on the degree of the spline basis.
B. Forster   +22 more
core   +1 more source

A Discrete Adapted Hierarchical Basis Solver For Radial Basis Function Interpolation

open access: yes, 2012
In this paper we develop a discrete Hierarchical Basis (HB) to efficiently solve the Radial Basis Function (RBF) interpolation problem with variable polynomial order.
Castrillon-Candas, Julio Enrique   +2 more
core   +1 more source

On construction of fourth order Chebyshev splines [PDF]

open access: yes, 1999
It is an important fact that general families of Chebyshev and L-splines can be locally represented, i.e. there exists a basis of B-splines which spans the entire space.
M. Rogina
core   +2 more sources

Univariate spline quasi-interpolants and applications to numerical analysis

open access: yes, 2005
We describe some new univariate spline quasi-interpolants on uniform partitions of bounded intervals. Then we give some applications to numerical analysis: integration, differentiation and approximation of ...
Sablonnière, Paul
core   +2 more sources

R 0 estimation for COVID-19 pandemic through exponential fit. [PDF]

open access: yesMath Methods Appl Sci, 2022
Mingliang Z, Simos TE, Tsitouras C.
europepmc   +1 more source

Splines with Free Knots, the Heat Equation, and the Gauß Transform [PDF]

open access: yes, 1996
The Gauß (or Weierstraß) transform has applications in many fields of applied mathematics. One of its most important properties within approximation theory is the fact that it maps weak Chebychev spaces onto Chebychev spaces.
Walz, Guido
core   +1 more source

Basis of splines associated with singularly perturbed advection -diffusion problems [PDF]

open access: yes, 2010
Among fitted-operator methods for solving one-dimensional singular perturbation problems one of the most accurate is the collocation by linear combinations of ${1,x,exp{(pm p x)} }$, known as tension spline collocation.
Tina Bosner
core   +1 more source

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