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Theory and Modern Applications

Table 3 Invariants for single soliton of MRLW equation with \(\pmb{N=128}\) and \(\pmb{c=\frac{4}{3}}\)

From: A second-order Fourier pseudospectral method for the generalized regularized long wave equation

Time

Δ t  = 0.05

Δ t  = 0.025

\(\boldsymbol {\mathcal{J}_{1}}\)

\(\boldsymbol {\mathcal{J}_{2}}\)

\(\boldsymbol {\mathcal {J}_{3}}\)

\(\boldsymbol {\mathcal{J}_{1}}\)

\(\boldsymbol {\mathcal{J}_{2}}\)

\(\boldsymbol {\mathcal{J}_{3}}\)

T = 0

7.9999950

5.5997821

2.0584499

7.9999950

5.5997821

2.0584499

T = 4

7.9999950

5.5998333

2.0586695

7.9999950

5.5997884

2.0584982

T = 8

7.9999950

5.5998850

2.0588246

7.9999950

5.5997947

2.0585311

T = 12

7.9999950

5.5999359

2.05886249

7.9999950

5.5998002

2.0585384

T = 16

7.9999950

5.5998258

2.0598310

7.9999950

5.5996448

2.0595023