@Article{AAMM-17-1867, author = {Zhang , Haiyan and Liang , Hui}, title = {On Convergence and Superconvergence of Discontinuous Galerkin Method for Semi-Explicit Index-1 Integro-Differential Algebraic Equations}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2025}, volume = {17}, number = {6}, pages = {1867--1894}, abstract = {

This paper mainly focuses on the discontinuous Galerkin (DG) method for solving the semi-explicit index-1 integro-differential algebraic equation (IDAE), which is a coupled system of Volterra integro-differential equations (VIDEs) and second-kind Volterra integral equations (VIEs). The DG approach is applied to both the VIDE and VIE components of the system. The global convergence respectively in the $L^2$- norm and $L^\infty$-norm is established, and the local superconvergence for VIDE component is obtained. Furthermore, numerical examples are presented to validate the theoretical convergence and superconvergence results.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.OA-2025-0147}, url = {http://global-sci.org/intro/article_detail/aamm/24498.html} }