Table 4 Comparison of invariants for the interaction of two solitary waves with results from [34] with $\mathit{h}\mathbf{=}\mathbf{0.2}$, $\mathit{k}\mathbf{=}\mathbf{0.025}$ in the region $\mathbf{0}\mathbf{\le }\mathit{x}\mathbf{\le }\mathbf{250}$

t

${\mathit{I}}_{\mathbf{1}}$

${\mathit{I}}_{\mathbf{2}}$

${\mathit{I}}_{\mathbf{3}}$

${\mathit{I}}_{\mathbf{1}}$

${\mathit{I}}_{\mathbf{2}}$

${\mathit{I}}_{\mathbf{3}}$