摘要
Inthispaper,basedonthesymboliccomputingsystemMaple,thedirectmethodforLiesymmetrygroupspresentedbySen-YueLou[J.Phys.A:Math.Gen.38(2005)L129]isextendedfromthecontinuousdifferentialequationstothedifferential-differenceequations.Withtheextendedmethod,westudythewell-knowndifferential-differenceKPequation,KZequationand(2+1)-dimensionalANNVsystem,andboththeLiepointsymmetrygroupsandthenon-Liesymmetrygroupsareobtained.
出版日期
2009年09月19日（中国期刊网平台首次上网日期，不代表论文的发表时间）
