Necessary cycle detection is added to avoid the singular matrix appearing after gross error compensation,. Simulation results verify the effectiveness of modified algorithm.
通过加入必要的回路检测，避免了幅度补偿后矩阵奇异性的产生，仿真结果表明了改进算法的有效性。
Analyzes singular points of prey-predator system and proves that the system hasn't limit cycle on whole plane surface.
对一类生物系统的奇点进行分析，并证明在整个平面上该系统不存在极限环。
Almost all of scholars only studied the possible appearance or disappearance of a limit cycle surrounding a singular Point.
几乎所有的学者只针对极限环内含奇点的情况，讨论了极限环的存在性、唯一性、稳定性以及如何产生与消失。
Almost all of scholars only studied the possible appearance or disappearance of a limit cycle surrounding a singular Point.
几乎所有的学者只针对极限环内含奇点的情况，讨论了极限环的存在性、唯一性、稳定性以及如何产生与消失。
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