Geodesic
On the approximation of the derivatives of the Hermite interpolation polynomial on a triangle
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 50 (2010) no. 2, pp. 211-220 
A. V. Meleshkina. On the approximation of the derivatives of the Hermite interpolation polynomial on a triangle. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 50 (2010) no. 2, pp. 211-220. http://geodesic.mathdoc.fr/item/ZVMMF_2010_50_2_a0/
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Voir la notice de l'article provenant de la source Math-Net.Ru

Bounds on the deviation of the directional derivatives of the Hermite polynomial in the directions of a triangle sides are obtained; it is proved that these bounds are sharp. As a consequence, bounds on the deviations of the partial derivatives up to the third order inclusive are obtained.

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