Article ID Journal Published Year Pages File Type
4608320 Journal of Approximation Theory 2006 13 Pages PDF
Abstract

Suppose u is a function on a domain Ω in Rn all of whose mth order distributional derivatives are in Lp(Ω) and m is sufficiently large to imply that u is continuous. If the values of u on a sufficiently dense, but not necessarily regular, grid of points are in lp we obtain an estimate of the Lp(Ω) norm of u in terms of the lp norm of these values and the Lp norms of its mth order derivatives. This result is useful in obtaining error estimates for certain interpolation schemes.

Related Topics
Physical Sciences and Engineering Mathematics Analysis