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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