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math.NA2024
Greedy Adaptive Local Recovery of Functions in Sobolev Spaces
Robert Schaback
There are many ways to upsample functions from multivariate scattered data locally, using only a few neighbouring data points of the evaluation point. The position and number of th…
math.NA2021
-Sets for Kernel-Based Spaces
Robert Schaback
The concept of -sets as introduced by Collatz in 1956 was very useful in univariate Chebyshev approximation by polynomials or Chebyshev spaces. In the multivariate setting, the…