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Multiplicative perturbations of the Laplacian and related approximation problems

โœ Scribed by Francesco Altomare; Sabina Milella; Graziana Musceo

Publisher
Springer
Year
2011
Tongue
English
Weight
284 KB
Volume
11
Category
Article
ISSN
1424-3199

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## Abstract For an arbitrary differential operator __P__ of order __p__ on an open set __X__ โŠ‚ R^n^, the Laplacian is defined by ฮ” = __P__\*__P__. It is an elliptic differential operator of order __2p__ provided the symbol mapping of __P__ is injective. Let __O__ be a relatively compact domain in _