A Nonstandard Fitted Operator Method for Singularly Perturbed Parabolic Reaction-Diffusion Problems with a Large Time Delay

Table 4

Comparison of absolute maximum errors and rate of convergence for Example 2.

m, n	32, 32	64, 64	128, 128	256, 256
Present method
	5.6891e − 08	2.8561e − 09	1.5286e − 10	9.4897e − 12
	5.6891e − 08	2.8561e − 09	1.5286e − 10	9.4897e − 12
	5.6891e − 08	2.8561e − 09	1.5286e − 10	9.4897e − 12
	4.3161	4.2237	4.0581
Govindarao and Mohapatra [21]
	2.6347e − 03	2.4293e − 04	1.6525e − 05	1.0538e − 06
	2.6347e − 03	2.4293e − 04	1.6525e − 05	1.0538e − 06
	2.6347e − 03	2.4293e − 04	1.6525e − 05	1.0538e − 06
	3.4390	3.8771	3.9710