A Rational Basis for Function Approximation
- 1 February 1973
- journal article
- Published by Oxford University Press (OUP) in IMA Journal of Applied Mathematics
- Vol. 11 (1) , 83-104
- https://doi.org/10.1093/imamat/11.1.83
Abstract
Geometric arguments provide a basis for piecewise rational approximation over collections of regions of the type used in finite-element studies. The approximation is continous over the collection of regions and the rational basis functions provide a basis for linear functions over each element. Conic sides are analysed, and an alternative to isoparametric co-ordinates is described.Keywords
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