作者: J. P. Caulkins , R. F. Hartl , G. Tragler , G. Feichtinger
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摘要: We analyze a two-dimensional system of political behavior which has three equilibria in the uncontrolled version. After adding control variable, two more occur and Skiba curves (also called DNS curves) can be analyzed. In this model, it is possible to derive under what conditions each different saddle point, node, or focus. particular, for certain parameter ranges, all five have real eigenvalues. case, computed straightforward way than usual. The spiral outward, so any ray extending from origin crosses these arbitrarily many times, as alternately regions optimal approach equilibria.