Local approximations and intrinsic characterizations of spaces of smooth functions on regular subsets of $R^n$

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107730We give an intrinsic characterization of the restrictions of Sobolev, Triebel-Lizorkin and Besov spaces to regular subsets of $R^n$ via sharp maximal functions and local approximations.Functional Analysis46E35Local approximations and intrinsic characterizations of spaces of smooth functions on regular subsets of $R^n$text