Some basic properties of the antipode of an NoI-graded χ-Hopf algebra arestudied. Also, several equivalent conditions of an NoI-graded χ-bialgebra (χ-Hopf al
This paper is concerned with the stability of the rarefaction wave for the generalized KdV-Burgers equationRoughly speaking, under the assumption that u_ 【 u+,
Using Nevanlinna theory of the value distribution of meromorphic functions, the author investigates the problem of the growth of solutions of two types of algeb