Wheeler, Mary F.Whiteman, John R.2018-06-182018-06-181992-03Wheeler, Mary F. and Whiteman, John R.. "Superconvergence of Recovered Gradients of Discrete Time/Piecewise Linear Galerkin Approximations for Linear and Nonlinear Parabolic Problems." (1992) <a href="https://hdl.handle.net/1911/101747">https://hdl.handle.net/1911/101747</a>.https://hdl.handle.net/1911/101747Superconvergent error estimates in l2(H¹) and linfinity(H¹) norms are derived for recovered gradients of finite difference in time/piecewise linear Galerkin approximations in space for linear and quasi-nonlinear parabolic problems in two space dimensions. The analysis extends previous results for elliptic problems to the parabolic context, and covers problems in regions with non-smooth boundaries under certain assumptions on the regularity of the solutions.53 ppengTechnical reportTR92-07