Table 1: The maximum norm error and the temporal accuracy of for Example 4.

-ADI scheme ( )BD-ADI scheme ( )
error order error order

1/20 1/2 0.8609791/3 1.266265
1/40 0.882911 1.285881
1/80 0.910189 1.301046
1/160 0.936057 1.319085
1/320 0.959731 1.351071
1/640

1/20 2/3 1.2603631/2 1.463622
1/40 1.288661 1.474131
1/80 1.303399 1.488745
1/160 1.307319 1.514438
1/320 1.297645 1.535827
1/640

1/20 3/4 1.1748362/3 1.207510
1/40 1.197125 1.242740
1/80 1.210140 1.264770
1/160 1.216775 1.276115
1/320 1.217031 1.274583
1/640