Inelasticinteractionsofthemultiple-frontwavesforthemodifiedKadomtsev-Petviashviliequationinfluiddynamics,plasmaphysicsandelectrodynamics,Zhi-YuanSun,Yi-TianGao,HerebyinvestigatedisthemodifiedKadomtsev-Petviashviliequationwhichcanbe usedtodescribethewavephenomenain