A Difference Scheme and Its Error Analysis for a Poisson Equation with Nonlocal Boundary Conditions

Table 1

The errors for finite difference solutions in two norms.

4	4.632E − 03		1.198E − 02
5	1.166E − 03	3.97	3.004E − 03	3.99
6	2.924E − 04	3.99	7.520E − 04	3.99
7	7.325E − 05	3.99	1.882E − 04	4.00