info:eu-repo/semantics/article
Solutions of the divergence and Korn inequalities on domains with an external cusp
Fecha
2010-08Registro en:
Duran, Ricardo Guillermo; Lopez Garcia, Fernando Alfonso; Solutions of the divergence and Korn inequalities on domains with an external cusp; Suomalainen Tiedeakatemia; Annales Academiae Scientiarum Fennicae. Mathematica; 35; 8-2010; 421-438
1239-629X
1798-2383
CONICET Digital
CONICET
Autor
Duran, Ricardo Guillermo
Lopez Garcia, Fernando Alfonso
Resumen
This paper deals with solutions of the divergence for domains with external cusps. It is known that the classic results in standard Sobolev spaces, which are basic in the variational analysis of the Stokes equations, are not valid for this class of domains. For some bounded domains Ω⊂Rn presenting power type cusps of integer dimension m≤n−2, we prove the existence of solutions of the equation divu=f in weighted Sobolev spaces, where the weights are powers of the distance to the cusp. The results obtained are optimal in the sense that the powers cannot be improved. As an application, we prove existence and uniqueness of solutions of the Stokes equations in appropriate spaces for cuspidal domains. Also, we obtain weighted Korn type inequalities for this class of domains.