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Table 1 Error E v M N

From: High order of accuracy difference schemes for the inverse elliptic problem with Dirichlet condition

Difference schemes for v

N = 6, M = 108

N = 10, M = 300

Second order ADS

0.012664

0.003977

Third order ADS

0.0017276

3.79 × 10−4

Fourth order ADS

1.99 × 10−4

2.91 × 10−5