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Theory and Modern Applications

Table 2 Maximum errors and temporal convergence orders of difference scheme (2.14)–(2.16) for Example 5.1 with \(\alpha = 0.5\); \(\sigma = 0.2\); \(T = 1.5\); \(M = 2000\)

From: A fast implicit difference scheme for a new class of time distributed-order and space fractional diffusion equations with variable coefficients

N

β = 1.3

β = 1.5

β = 1.8

e(h,τ,σ)

\(\mathit{rate}_{\tau}\)

e(h,τ,σ)

\(\mathit{rate}_{\tau}\)

e(h,τ,σ)

\(\mathit{rate}_{\tau}\)

5

6.897311e−04

4.256675e−04

2.559967e−04

10

2.640520e−04

1.3852

1.711099e−04

1.3148

1.099115e−04

1.2198

20

8.702462e−05

1.6013

6.546150e−05

1.3862

4.935518e−05

1.1551

40

4.570569e−05

0.9290

3.003826e−05

1.1238

2.399388e−05

1.0405