Approximation with Conditionally Positive Definite Kernels on Deficient Sets
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2020
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| _version_ | 1866915457835991040 |
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| author | Davydov, Oleg |
| author_facet | Davydov, Oleg |
| contents | Interpolation and approximation of functionals with conditionally positive definite kernels is considered on sets of centers that are not determining for polynomials. It is shown that polynomial consistency is sufficient in order to define kernel-based numerical approximation of the functional with usual properties of optimal recovery. Application examples include generation of sparse kernel-based numerical differentiation formulas for the Laplacian on a grid and accurate approximation of a function on an ellipse. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2006_13543 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Approximation with Conditionally Positive Definite Kernels on Deficient Sets Davydov, Oleg Numerical Analysis 65N15, 65N06 Interpolation and approximation of functionals with conditionally positive definite kernels is considered on sets of centers that are not determining for polynomials. It is shown that polynomial consistency is sufficient in order to define kernel-based numerical approximation of the functional with usual properties of optimal recovery. Application examples include generation of sparse kernel-based numerical differentiation formulas for the Laplacian on a grid and accurate approximation of a function on an ellipse. |
| title | Approximation with Conditionally Positive Definite Kernels on Deficient Sets |
| topic | Numerical Analysis 65N15, 65N06 |
| url | https://arxiv.org/abs/2006.13543 |