A P-VERSION TWO LEVEL SPLINE METHOD FOR SEMI-LINEAR ELLIPTIC EQUATIONS  

作　　者：Xinping Shao Danfu Han Xianliang Hu 

机构地区：[1]Deptartment of Mathematics,Zhejiang University,Hangzhou 310027,China

出　　处：《Journal of Computational Mathematics》2012年第5期544-554,共11页计算数学（英文）

摘　　要：A novel two level spline method is proposed for semi-linear elliptic equations, where the two level iteration is implemented between a pair of hierarchical spline spaces with different orders. The new two level method is implementation in a manner of p-adaptivity. A coarse solution is obtained from solving the model problem in the low order spline space, and the solution with higher accuracy are generated subsequently, via one step Newton or monidifed Newton iteration in the high order spline space. We also derive the optimal error estimations for the proposed two level schemes. At last, the illustrated numerical results confirm our error estimations and further research topics are commented.A novel two level spline method is proposed for semi-linear elliptic equations, where the two level iteration is implemented between a pair of hierarchical spline spaces with different orders. The new two level method is implementation in a manner of p-adaptivity. A coarse solution is obtained from solving the model problem in the low order spline space, and the solution with higher accuracy are generated subsequently, via one step Newton or monidifed Newton iteration in the high order spline space. We also derive the optimal error estimations for the proposed two level schemes. At last, the illustrated numerical results confirm our error estimations and further research topics are commented.

关 键 词：P-VERSION Two level method Spline methods SEMI-LINEAR Error estimation. 

分 类 号：O175.25[理学—数学] O241.5[理学—基础数学]