"MIXED ELEMETS" IN FINITE ELEMENT METHOD
“混合元”的有限元法

In this paper we propose a new finite element method--the higher order in-terpolating function and the rough meshes are applied in the interior region and thelower order interpolating function and the fine meshes are applied near the boun-dary. We give such a proper match of the two sets of meshes that the error estimateis best possible.