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Fifth-order triangular element

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Old   June 16, 2004, 12:34
Default Fifth-order triangular element
Jonas Holdeman
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Can anyone point me to the formula for the fifth-order complete finite element on a unit right-angle triangle? This element has function and first and second derivatives at the corner nodes plus some internal nodes. Mitchel and Wait give a reduced form with the internal nodal degrees-of-freedom eliminated, but not the complete fifth-order element, saying that this element is "useless."
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