Finite element solution of nonlinear elliptic problems
Numerische Mathematik
Optimal finite-element interpolation on curved domains
SIAM Journal on Numerical Analysis
Mathematics of Computation
Error estimate in an isoparametric finite element eigenvalue problem
Mathematics of Computation
External finite-element approximations of eigenfunctions in the case of multiple eigenvalues
ICCAM'92 Proceedings of the fifth international conference on Computational and applied mathematics
Mathematics of Computation
Finite element approximation of the elasticity spectral problem on curved domains
Journal of Computational and Applied Mathematics
Convergence analysis for eigenvalue approximations on triangular finite element meshes
NAA'04 Proceedings of the Third international conference on Numerical Analysis and its Applications
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This paper deals with the finite element approximation of the spectral problem for the Laplace equation with Neumann boundary conditions on a curved nonconvex domain Ω. Convergence and optimal order error estimates are proved for standard piecewise linear continuous elements on a discrete polygonal domain Ωh ⊄ Ω in tile framework of the abstract spectral approximation theory.