×

\(n^{i e m e }\) épaisseur dans les espaces de Sobolev avec (The n-the width in Sobolev spaces with weight). (French) Zbl 0224.41012

MSC:

41A65 Abstract approximation theory (approximation in normed linear spaces and other abstract spaces)
46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems