Fast High-Order Difference Scheme for the Modified Anomalous Subdiffusion Equation Based on Fast Discrete Sine Transform

Table 4

The -norm errors in space for nonsmooth case in Example 1 with .

error	Rate	error	Rate	error	Rate
	4	4.01E-04	—	5.32E-04	—	5.79E-04	—
	8	1.59E-04	1.34	2.76E-05	4.27	1.91E-05	4.92
	16	1.93E-04	-0.28	6.19E-05	-1.16	1.52E-05	0.33
	4	5.08E-04	—	5.87E-04	—	5.93E-04	—
	8	5.28E-05	3.27	2.59E-05	4.50	3.16E-05	4.23
	16	8.72E-05	-0.72	8.49E-06	1.61	2.80E-06	3.50
	4	4.86E-04	—	5.74E-04	—	5.89E-04	—
	8	7.49E-05	2.70	1.34E-05	5.42	2.81E-05	4.39
	16	1.09E-04	-0.54	2.09E-05	-0.64	6.22E-06	2.18