The stability of time-delay and time-varying large scale systems with impulsive effect is investigated by means of the comparison principle and vector Lyapunov function with discontinuous derivative.
Said invented composition also contains citric acid, phospholipin, cyclodextrin and its derivative or surfactant, and said invented product has good solubility and stability.
本发明组合物中还含有枸橼酸、磷脂、环糊精及其衍生物或表面活性剂，该制品具有良好的溶解性和稳定性。
3
This paper discusses the stability of solution of the oblique derivative problem for the nonlinear elliptic system of first order equations.