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Theory and Modern Applications

Table 1 \(\pmb{H_{1}}\) -errors and convergence orders obtained for Example  1 with \(\pmb{N=24}\)

From: Generalized finite difference/spectral Galerkin approximations for the time-fractional telegraph equation

τ

α  = 0.1

α  = 0.5

α  = 0.9

Error

Order

Error

Order

Error

Order

1/10

3.9589e–4

/.

3.0103e–3

/.

2.5966e–2

/.

1/20

1.0880e–4

1.8634

1.0807e–3

1.4780

1.0944e–2

1.2466

1/40

3.0137e–5

1.8521

3.9389e–4

1.4560

4.8585e–3

1.1715

1/80

8.4082e–6

1.8417

1.4267e–4

1.4652

2.2122e–3

1.1351

1/160

2.3492e–6

1.8397

5.1324e–5

1.4749

1.0199e–3

1.1171

1/320

6.5523e–7

1.8421

1.8371e–5

1.4822

4.7307e–4

1.1083

1/640

1.8224e–7

1.8462

6.5518e–6

1.4875

2.2009e–4

1.1040