Based on the alternating group strategies, a new high accurate Alternating Group 8-point scheme (AG-8p) for the diffusion problem is presented. The scheme is proved to be unconditionally stable. In numerical experiments, we compare the AG-8p scheme wi...
Based on the alternating group strategies, a new high accurate Alternating Group 8-point scheme (AG-8p) for the diffusion problem is presented. The scheme is proved to be unconditionally stable. In numerical experiments, we compare the AG-8p scheme with the AGE and the ASC-N schemes. Finally, numerical results show that the AG-8p scheme has high accuracy.