Hermite-Birkhoff interpolation on scattered data on the sphere and other manifolds
| Autor: | Giampietro Allasia, Alessandra De Rossi, Roberto Cavoretto |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
multivariate approximation
Pure mathematics multivariate approximation Hermite-Birkhoff interpolation meshfree methods arbitrarily distributed data Basis function 010103 numerical & computational mathematics 01 natural sciences symbols.namesake FOS: Mathematics Taylor series Orthonormal basis Mathematics - Numerical Analysis 0101 mathematics Linear combination arbitrarily distributed data Mathematics Hermite polynomials meshfree methods Applied Mathematics Numerical Analysis (math.NA) Birkhoff interpolation Hermite-Birkhoff interpolation 010101 applied mathematics Computational Mathematics Partition of unity symbols Interpolation |
| Popis: | The Hermite–Birkhoff interpolation problem of a function given on arbitrarily distributed points on the sphere and other manifolds is considered. Each proposed interpolant is expressed as a linear combination of basis functions, the combination coefficients being incomplete Taylor expansions of the interpolated function at the interpolation points. The basis functions depend on the geodesic distance, are orthonormal with respect to the point-evaluation functionals, and have all derivatives equal zero up to a certain order at the interpolation points. A remarkable feature of such interpolants, which belong to the class of partition of unity methods, is that their construction does not require solving linear systems. Numerical tests are given to show the interpolation performance. |
| Databáze: | OpenAIRE |
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