Smooth macro-elements based on Clough-Tocher triangle splits
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Summary. Macro-elements of smoothness \(C^r\) on Clough-Tocher triangle splits are constructed for all \(r \ge 0\). These new elements are improvements on elements constructed in  in that (disproving a conjecture made there) certain unneeded degrees of freedom have been removed. Numerical experiments on Hermite interpolation with the new elements are included.
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