@Article{JCM-42-1124, author = {Hu , HanzhangChen , Yanping and Zhou , Jianwei}, title = {Two-Grid Finite Element Method for Time-Fractional Nonlinear Schrödinger Equation}, journal = {Journal of Computational Mathematics}, year = {2024}, volume = {42}, number = {4}, pages = {1124--1144}, abstract = {

A two-grid finite element method with $L1$ scheme is presented for solving two-dimensional time-fractional nonlinear Schrödinger equation. The finite element solution in the $L^∞$-norm are proved bounded without any time-step size conditions (dependent on spatial-step size). The classical $L1$ scheme is considered in the time direction, and the two-grid finite element method is applied in spatial direction. The optimal order error estimations of the two-grid solution in the $L^p$-norm is proved without any time-step size conditions. It is shown, both theoretically and numerically, that the coarse space can be extremely coarse, with no loss in the order of accuracy.

}, issn = {1991-7139}, doi = {https://doi.org/10.4208/jcm.2302-m2022-0033}, url = {http://global-sci.org/intro/article_detail/jcm/23049.html} }