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Table 2b Errors and computational rate for the EF-EEG-TOCS in Example 5.2

From: Exponential basis and exponential expanding grids third (fourth)-order compact schemes for nonlinear three-dimensional convection-diffusion-reaction equation

L + 1 p q r α β γ \(\mathfrak {l}_{2}^{ ( I,J,K )}\) \(\varTheta _{\infty }\)
4 1.40 1.40 1.30 20 33 34 2.98e–02
8 1.30 1.20 1.20 32 32 31 1.67e–03 4.2
16 1.10 1.10 1.40 32 32 33 1.34e–04 3.6
32 1.09 1.09 1.10 32 32 33 9.15e–06 3.9