Quasi-interpolation in Spline Spaces: Local Stability and Approximation Properties

Autores

  • M. E. Castillo
  • E. M. Garau Consejo Nacional de Investigaciones Científicas y Técnicas and Universidad Nacional del Litoral

DOI:

https://doi.org/10.5540/tcam.2022.024.01.00009

Palavras-chave:

spline approximation, quasi-interpolation, stability, B-splines

Resumo

In this work we analyze the approximation error in Sobolev norms for quasi-interpolation operators in spline spaces. We establish in a general way the hypotheses on a quasi-interpolant to achieve the optimal order of approximation. Finally, we propose simple but general constructions of such operators that satisfy the established hypotheses and illustrate their performance through some numerical tests.

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Publicado

2023-03-14

Como Citar

Castillo, M. E., & Garau, E. M. (2023). Quasi-interpolation in Spline Spaces: Local Stability and Approximation Properties. Trends in Computational and Applied Mathematics, 24(1), 9–18. https://doi.org/10.5540/tcam.2022.024.01.00009

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