作者: Thomas Apel , Johannes Pfefferer , Arnd Rösch
DOI: 10.1007/978-3-319-05083-6_18
关键词: Polygon mesh 、 Elliptic partial differential equation 、 Mathematics 、 Applied mathematics 、 Convergence (routing) 、 Domain (mathematical analysis) 、 Finite element method 、 Optimal control 、 Numerical partial differential equations 、 Boundary value problem
摘要: It is well known that singularities in the solution of boundary value problems due to corners and edges domain lead a reduction convergence order standard finite element method when quasi-uniform meshes are used. also locally graded suited recover optimal order. Less critical angles mesh grading becomes necessary; it not always same but depends on norm which error estimated. In this paper, an overview results given lacking estimates pointed out. Since for control based those pure both cases considered.