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| PROPERTIES IN THE LARGE OF QUADRATIC SYSTEMS IN THE PLANE | |
| 作者姓名： | 韩茂安 |
| 作者单位： | Department of |
| 摘 要： | The author proves that any quadratic system in the plane can be changed into the quadratic system (E_1) or (E_2) by means of linear transformations, and then gives a necessary and sufficient condition for the systems (E_1) and (E_2) to be bounded for t≥0 and to have precisely one monotone unboundol orbit for t≥0 respectively. |
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