【摘要】 本文对线性椭圆问题的最低次混合元方法提出了构造混合元空间的充分条件，并 建立了新的插值算子．据此得到了混合元解，伴随向量函数及其散度的最优最大模误差 估计．更多还原

【Abstract】 In this paper a sufficient condition to construct the lowest-order mixed finite element space is proposed and a new interpolation operator is created. On the basis of these two results the optimal maximum norm error estimates for the mired finite element solution, the adjoint vector-function and its divergence of linear elliptic problems are proved.更多还原