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Table 5c Errors and order for EF-EEG-TOCS in Example 5.5 at \(\epsilon =0.1\)

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 Itr \(\mathfrak {l}_{2}^{ ( I,J,K )}\) \(\varTheta _{\infty }\)
4 0.90 0.90 1.00 1.00 1.00 1.00 9 5.04e–04
8 0.88 0.92 1.00 1.00 1.00 1.00 18 3.34e–05 3.9
16 0.90 1.00 1.00 1.00 1.00 1.00 26 2.15e–06 4.0