Preface |
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xiii | |
Acknowledgments |
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xvii | |
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1 | (18) |
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A Posteriori Error Estimation: The Setting |
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1 | (1) |
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2 | (2) |
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Finite Element Nomenclature |
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4 | (11) |
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5 | (2) |
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7 | (2) |
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Finite Element Partitions |
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9 | (1) |
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Finite Element Spaces on Triangles |
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10 | (1) |
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Finite Element Spaces on Quadrilaterals |
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11 | (1) |
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Properties of Lagrange Basis Functions |
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12 | (1) |
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Finite Element Interpolation |
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12 | (1) |
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13 | (1) |
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Regularized Approximation Operators |
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14 | (1) |
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15 | (1) |
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Properties of A Posteriori Error Estimators |
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16 | (2) |
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18 | (1) |
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Explicit A Posteriori Estimators |
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19 | (24) |
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19 | (1) |
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A Simple A Posteriori Error Estimate |
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20 | (3) |
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23 | (9) |
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23 | (5) |
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28 | (3) |
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Proof of Two-Sided Bounds on the Error |
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31 | (1) |
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A Simple Explicit Least Squares Error Estimator |
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32 | (2) |
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Estimates for the Pointwise Error |
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34 | (8) |
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35 | (3) |
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Regularized Green's Function |
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38 | (1) |
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Two-Sided Bounds on the Pointwise Error |
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39 | (3) |
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42 | (1) |
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Implicit A Posteriori Estimators |
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43 | (22) |
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43 | (1) |
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The Subdomain Residual Method |
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44 | (6) |
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Formulation of Subdomain Residual Problem |
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45 | (1) |
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46 | (1) |
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47 | (2) |
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Treatment of Residual Problems |
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49 | (1) |
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The Element Residual Method |
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50 | (6) |
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Formulation of Local Residual Problem |
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50 | (2) |
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Solvability of the Local Problems |
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52 | (2) |
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The Classical Element Residual Method |
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54 | (1) |
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Relationship with Explicit Error Estimators |
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54 | (1) |
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Efficiency and Reliability of the Estimator |
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55 | (1) |
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The Influence and Selection of Subspaces |
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56 | (7) |
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Exact Solution of Element Residual Problem |
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56 | (3) |
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Analysis and Selection of Approximate Subspaces |
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59 | (3) |
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62 | (1) |
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63 | (2) |
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Recovery-Based Error Estimators |
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65 | (20) |
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Examples of Recovery-Based Estimators |
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66 | (6) |
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An Error Estimator for a Model Problem in One Dimension |
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67 | (2) |
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An Error Estimator for Bilinear Finite Element Approximation |
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69 | (3) |
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72 | (3) |
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Approximation Properties of Recovery Operators |
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73 | (2) |
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The Superconvergence Property |
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75 | (1) |
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Application to A Posteriori Error Estimation |
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76 | (1) |
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Construction of Recovery Operators |
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77 | (2) |
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The Zienkiewicz-Zhu Patch Recovery Technique |
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79 | (3) |
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Linear Approximation on Triangular Elements |
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79 | (2) |
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Quadratic Approximation on Triangular Elements |
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81 | (1) |
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Patch Recovery for Quadrilateral Elements |
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82 | (1) |
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82 | (1) |
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83 | (2) |
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Estimators, Indicators, and Hierarchic Bases |
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85 | (26) |
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85 | (3) |
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88 | (1) |
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89 | (1) |
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Error Estimation Using a Reduced Subspace |
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90 | (4) |
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The Strengthened Cauchy-Schwarz Inequality |
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94 | (4) |
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98 | (2) |
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Multilevel Error Indicators |
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100 | (9) |
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109 | (2) |
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The Equilibrated Residual Method |
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111 | (34) |
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111 | (1) |
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The Equilibrated Residual Method |
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112 | (4) |
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The Equilibrated Flux Conditions |
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116 | (1) |
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Equilibrated Fluxes on Regular Partitions |
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117 | (11) |
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First-Order Equilibration Condition |
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118 | (1) |
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The Form of the Boundary Fluxes |
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118 | (2) |
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Equilibration Conditions in Terms of the Moments |
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120 | (1) |
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Local Patch Problems for the Flux Moments |
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120 | (3) |
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Procedure for Resolution of Patch Problems |
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123 | (4) |
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127 | (1) |
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Efficiency of the Estimator |
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128 | (5) |
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Stability of the Equilibrated Fluxes |
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128 | (3) |
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Proof of Efficiency of the Estimator |
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131 | (2) |
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Equilibrated Fluxes on Partitions Containing Hanging Nodes |
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133 | (6) |
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First-Order Equilibration |
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133 | (1) |
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Flux Moments for Unconstrained Nodes |
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134 | (3) |
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Flux Moments with Respect to Constrained Nodes |
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137 | (1) |
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Recovery of Actual Fluxes |
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137 | (2) |
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Equilibrated Fluxes for Higher-Order Elements |
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139 | (4) |
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The Form of the Boundary Fluxes |
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141 | (1) |
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Determination of the Flux Moments |
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141 | (2) |
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143 | (2) |
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Methodology for the Comparison of Estimators |
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145 | (44) |
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145 | (1) |
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Overview of the Technique |
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146 | (3) |
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Approximation over an Interior Subdomain |
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149 | (8) |
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Translation Invariant Meshes |
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149 | (3) |
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Lower Bounds on the Error |
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152 | (1) |
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153 | (4) |
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Asymptotic Finite Element Approximation |
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157 | (8) |
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Periodic Finite Element Projection on Reference Cell |
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157 | (1) |
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Periodic Finite Element Projection on a Physical Cell |
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158 | (1) |
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Periodic Extension on a Subdomain |
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159 | (1) |
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Asymptotic Finite Element Approximation |
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160 | (5) |
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165 | (9) |
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Verification of Stability Condition for Explicit Estimator |
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166 | (2) |
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Verification of Stability Condition for Implicit Estimators |
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168 | (1) |
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Verification of Stability Condition for Recovery-Based Estimator |
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169 | (1) |
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Elementary Consequences of the Stability Condition |
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170 | (2) |
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Evaluation of Effectivity Index in the Asymptotic Limit |
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172 | (2) |
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An Application of the Theory |
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174 | (13) |
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Computation of Asymptotic Finite Element Solution |
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174 | (4) |
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Evaluation of the Error in Asymptotic Finite Element Approximation |
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178 | (2) |
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Computation of Limits on the Asymptotic Effectivity Index for Zienkiewicz-Zhu Patch Recovery Estimator |
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180 | (4) |
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Application to Equilibrated Residual Method |
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184 | (1) |
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Application to Implicit Element Residual Method |
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184 | (3) |
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187 | (2) |
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Estimation of the Errors in Quantities of Interest |
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189 | (18) |
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189 | (2) |
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Estimates for the Error in Quantities of Interest |
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191 | (2) |
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Upper and Lower Bounds on the Errors |
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193 | (4) |
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Goal-Oriented Adaptive Refinement |
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197 | (1) |
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Example of Goal-Oriented Adaptivity |
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198 | (4) |
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Adaptivity Based on Control of Global Error in Energy |
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198 | (1) |
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Goal-Oriented Adaptivity Based on Pointwise Quantities of Interest |
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198 | (4) |
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Local and Pollution Errors |
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202 | (3) |
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205 | (2) |
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207 | (22) |
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207 | (1) |
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Stokes and Oseen's Equations |
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208 | (11) |
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A Posteriori Error Analysis |
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211 | (7) |
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218 | (1) |
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Incompressible Navier-Stokes Equations |
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219 | (3) |
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Extensions to Nonlinear Problems |
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222 | (5) |
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A Class of Nonlinear Problems |
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222 | (2) |
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A Posteriori Error Estimation |
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224 | (1) |
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Estimation of the Residual |
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225 | (2) |
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227 | (2) |
References |
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229 | (10) |
Index |
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239 | |