Nonconforming finite element approximations of the Steklov eigenvalue problem and its lower bound approximations.

Autor:	Li, Qin
Další autoři:	Lin, Qun Xie, Hehu
Jazyk:	angličtina
Předmět:	matematika mathematics články journal articles Steklov eigenvalue problem nonconforming finite element error estimate lower bound of the eigenvalues
Druh dokumentu:	Non-fiction
Abstrakt:	Abstract: The paper deals with error estimates and lower bound approximations of the Steklov eigenvalue problems on convex or concave domains by nonconforming finite element methods. We consider four types of nonconforming finite elements: Crouzeix-Raviart, $Q_1^{\text{rot}}$, $EQ_1^{\text{rot}}$ and enriched Crouzeix-Raviart. We first derive error estimates for the nonconforming finite element approximations of the Steklov eigenvalue problem and then give the analysis of lower bound approximations. Some numerical results are presented to validate our theoretical results.
Databáze:	Katalog Knihovny AV ČR
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