Abstract
This note presents a new instance of spline approximation in which the observation of a function is its value on an interior contour or hypersurface and the coobservation is its gradient. There follow three comments relevant to the application of the theory of optimal approximation.
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References
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© 1976 Springer-Verlag
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Sard, A. (1976). On optimal approximation. In: Böhmer, K., Meinardus, G., Schempp, W. (eds) Spline Functions. Lecture Notes in Mathematics, vol 501. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0079750
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DOI: https://doi.org/10.1007/BFb0079750
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Online ISBN: 978-3-540-38073-3
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