Combining our theoretical analysis , we extend lieb and mattis ' s approaches for finite systems . moreover , the effect of the ground - state degeneracy on the spin status and physical properties are investigated and discussed 結(jié)合理論分析,我們把lieb和mattis的定理發(fā)展到有限系統(tǒng),并在此基礎上分析了基態(tài)的簡并對自旋位形和物理性質(zhì)的影響。