<正>In the interaction of laser-plasma the system of Zakharov equation plays an important role.This system attracted many scientists' wide interest and atte
Killing form plays a key role in the theory of semisimple Lie algebras. It is natural to extend the study to Lie algebras with a nondegenerate symmetric invaria
<正>0 Introduction It is well known that there axe a great number of interesting results in Fourier analysis established by assuming monotonicity of coefficient