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math.NA2014
Div First-Order System LL* (FOSLL*) for Second-Order Elliptic Partial Differential Equations
Zhiqiang Cai, Rob Falgout, Shun Zhang
The first-order system LL* (FOSLL*) approach for general second-order elliptic partial differential equations was proposed and analyzed in [10], in order to retain the full efficie…
math.NA2014
Recovery-Based Error Estimators for Diffusion Problems: Explicit Formulas
Zhiqiang Cai, Shun Zhang
We introduced and analyzed robust recovery-based a posteriori error estimators for various lower order finite element approximations to interface problems in [9, 10], where the rec…