In the second chapter, the concept of an integrated abstract delayequation is introduced, and the equivalence of the well - posedness of an integrated delay eq.
The research of delay differential equation is very important in theory and in practice.
这篇文章的主要目的是研究时滞对种群生长的作用。
3
Considering a kind of neutral delay differential equations, a sufficient condition for the oscillation of all solutions of neutral delay differential equation in critical state is obtained.