The transition set and the bifurcation figures of the nonlinear systems have been achieved by the singularity theory.
第五章用规范形理论求出了非线性系统的分岔响应方程，用奇异性理论得到了系统的转迁集和分岔图。
2
An analytical expression for determining singularity configuration which is a polynomial equation is set, and the numeric symbolic manipulating technique is introduced in the paper.