Duck solutions, a new kind of bifurcation phenomenon, are discovered and studied during the study of singular perturbation equations in the recent decades.

鸭解是近年来在奇异摄动方程的研究中发现并开始研究的。它是一种新的分支现象。

youdao

The existence of periodic solution of singular discrete system is firstly stud - ied and theorem which periodic solutions of singular discrete system exist is given.

首次对广义离散系统的周期解的存在性进行研究，给出了广义离散系统周期解存在的判据。

youdao

First, the general notion of solvability and generalized state solutions for linear discrete coefficient_vary singular systems are analyzed.

首先分析总结了线性离散变系数奇异系统可解性及其广义状态解的一般概念。

youdao