Nonlocal symmetries and similarity reductions for Korteweg–de Vries–negative-order Korteweg

Nonlocal symmetries and similarity reductions for Korteweg–de Vries–negative-order Korteweg–de Vries equation

Hu Heng-Chun^†, Liu Fei-Yan

The quasi-solitary wave solution u expressed by Eq. (31) of the KdV–nKdV equation with Eqs. (28) and (30) and the constants selection k = 0.7, b = 2, Δ = 4, c₁ = c₂ = 2, c₃ = 8.