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Table 1 Error of v in example ( 53 )

From: Numerical solution to Bitsadze-Samarskii type elliptic overdetermined multipoint NBVP

Difference scheme

N  =  M  = 20

N  =  M  = 40

N  =  M  = 80

N  =  M  = 160

First order of the ADS

6.12 × 10−3

2.69 × 10−3

1.25 × 10−3

6.03 × 10−4

Second order of the ADS

1.73 × 10−3

4.36 × 10−4

1.09 × 10−4

2.73 × 10−5