residual
the function whose value in the n-th approximation by a numerical method is that of the well-posed problem in the couple consisting of the exact data and the n-th approximation
en-GB/ɹɪˈzɪdjʊəl/
en-US/ɹɪˈzɪd͡ʒuəl/
the function whose value in the n-th approximation by a numerical method is that of the well-posed problem in the couple consisting of the exact data and the n-th approximation