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Table 2 \(C_{1}\)-order of convergence for Test problem 3, when \(h=\frac{1}{8}\)

From: High-order compact scheme for the two-dimensional fractional Rayleigh–Stokes problem for a heated generalized second-grade fluid

τγ = 0.5γ = 0.6
\(L_{\infty }\)\(C_{1}\)-order\(L_{\infty }\)\(C_{1}\)-order
\(\tau =\frac{1}{10}\)1.7170 × 10−29.1171 × 10−3
\(\tau =\frac{1}{20}\)8.8342 × 10−30.964.8390 × 10−30.91
\(\tau =\frac{1}{40}\)4.4698 × 10−30.982.4948 × 10−30.96
\(\tau =\frac{1}{80}\)2.2719 × 10−30.981.2749 × 10−30.97