A Framework for Nonconforming Mixed Finite Element Method for Elliptic Problems in

Table 1

-error for pressure and -error of velocity (Example 1).

Level		Order		Order
1	3.652E − 04		1.649E − 02
2	1.043E − 04	1.807	4.626E − 03	1.834
3	2.681E − 05	1.960	1.188E − 03	1.961
4	6.746E − 06	1.991	2.990E − 04	1.990
5	1.689E − 06	1.998	7.488E − 05	1.998