Models of periodically inhomogeneous perturbations are made reasonedly in a quasi-ideal dispersion-managed soliton system, their effects on second-order soliton propagation are investigated.
在准理想的的色散管理系统中建立了非均匀扰动模型，研究了它们对二阶孤子传输的影响。
2
We study the regularity of right SF-rings whose every maximal right ideal is a quasi-ideal. Some new characterizations on the regularity of right SF-rings are obtained, which generalize some results.