Anjam, Immanuel; Pauly, Dirk An elementary method of deriving a posteriori error equalities and estimates for linear partial differential equations. (English) Zbl 1420.65112 Comput. Methods Appl. Math. 19, No. 2, 311-322 (2019). MSC: 65N15 PDFBibTeX XMLCite \textit{I. Anjam} and \textit{D. Pauly}, Comput. Methods Appl. Math. 19, No. 2, 311--322 (2019; Zbl 1420.65112) Full Text: DOI arXiv
Anjam, Immanuel; Pauly, Dirk Functional a posteriori error control for conforming mixed approximations of coercive problems with lower order terms. (English) Zbl 1348.65150 Comput. Methods Appl. Math. 16, No. 4, 609-631 (2016). MSC: 65N15 PDFBibTeX XMLCite \textit{I. Anjam} and \textit{D. Pauly}, Comput. Methods Appl. Math. 16, No. 4, 609--631 (2016; Zbl 1348.65150) Full Text: DOI arXiv