%0 Journal Article %T A Priori and a Posteriori Error Estimates of a WOPSIP DG Method for the Heat Equation %A Liang %A Fen %A Wen %A Kunwen %A Zeng %A Yuping %A Zhu %A Huijian %J - %D 2020 %R https://doi.org/10.1155/2020/7525676 %X We introduce and analyze a weakly overpenalized symmetric interior penalty method for solving the heat equation. We first provide optimal a priori error estimates in the energy norm for the fully discrete scheme with backward Euler time-stepping. In addition, we apply elliptic reconstruction techniques to derive a posteriori error estimators, which can be used to design adaptive algorithms. Finally, we present two numerical experiments to validate our theoretical analysis %U https://www.hindawi.com/journals/mpe/2020/7525676/