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On the Qualitative Analysis of Sigular Point of High Order in the Case of Undetermined Signs
Pages: 1-16
Year: Issue:  2
Journal: Transactions of Beijing Institute of Technology

Keyword:  奇点积分曲线角域等倾线轨线定号半平面无穷远点曲边第三象限;
Abstract: In this paper the gualitatrve behavior of trajectories near the singular point of high order is invest igafed in the case of undetermined signs by means of curved sectors. This is a genralization of M. Frommer’s normal sectors. For the first and second decision problem analytic criteria are derived fo facilitate application.
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