Comment on “Group analysis of KdV equation with time dependent coefficients”

摘要

We show that the group classification results of the article entitled “Group analysis of KdV equation with time dependent coefficients” which appeared in [A.G. Johnpillai, M.C. Khalique, Group analysis of KdV equation with time dependent coefficients, Appl. Math. Comput. 216 (2010) 3761–3771] can be obtained from those of a more general class by a change of variables.