Abstract:A new class of biorthogonal wavelets-interpolating distributed approximating functional (DAF) wavelets are proposed as a powerful basis for scale-space functional analysis and approximation. The important advantage is that these wavelets can be designed with infinite smoothness in both time and frequency spaces, and have as well symmetric interpolating characteristics. Boundary adaptive wavelets can be implemented conveniently by simply shifting the window envelope. As examples, generalized Lagrange wavelets a… Show more
“…For this reason, this wavelet Ž . family is called interpolating Lagrange wa®elet Shi et al, 1999 . The polynomial degree, n, is related to the wavelet order, ms nq1, which means that the interpolation only involves m neighborhood points.…”
Section: Multiresolution Representation Of Datamentioning
“…For this reason, this wavelet Ž . family is called interpolating Lagrange wa®elet Shi et al, 1999 . The polynomial degree, n, is related to the wavelet order, ms nq1, which means that the interpolation only involves m neighborhood points.…”
Section: Multiresolution Representation Of Datamentioning
“…The ISF originate from a multiresolution analysis associated with interpolating (spline) wavelets [27,28,29]. The ISF have a finite support whose width is determined by the order of the underlying interpolating polynomial and the resolution level (the mesh step).…”
Section: Discussionmentioning
confidence: 99%
“…In this paper we present a treatment of reactive scattering based on the wave function representation in the basis of interpolating scaling functions corresponding to interpolating (spline) wavelets [28]. Basis functions are generated from a single function, called the scaling function, by appropriate scalings and shifts of its argument.…”
Wave packet propagation in the basis of interpolating scaling functions (ISF) is studied. The ISF are well known in the multiresolution analysis based on spline biorthogonal wavelets. The ISF form a cardinal basis set corresponding to an equidistantly spaced grid. They have compact support of the size determined by the order of the underlying interpolating polynomial that is used to generate ISF. In this basis the potential energy matrix is diagonal and the kinetic energy matrix is sparse and, in the 1D case, has a band-diagonal structure. An important feature of the basis is that matrix elements of a Hamiltonian are exactly computed by means of simple algebraic transformations efficiently implemented numerically. Therefore the number of grid points and the order of the underlying interpolating polynomial can easily be varied allowing one to approach the accuracy of pseudospectral methods in a regular manner, similar to high order finite difference methods. The results of numerical simulation of a H+H 2 collinear collision show that the ISF provide one with an accurate and efficient representation for use in the wave packet propagation method.
Abstract-The use of wavelets has become increasingly popular in the development of numerical schemes for the solution of partial differential equations (PDEs), especially for problems with local high gradient. In this work, the Galerkin Method has been adapted for the direct solution of differential equations in a meshless formulation using Daubechies wavelets and Deslauriers-Dubuc interpolating functions (Interpolets). This approach takes advantage of wavelet properties like compact support, orthogonality and exact polynomial representation, which allow the use of a multiresolution analysis. Several examples based on typical differential equations for beams and thin plates were studied successfully.Index Terms-Wavelets, interpolets, wavelet-galerkin method, beam on elastic foundation, thin plates.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.