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二阶代数微分方程组的超越亚纯解

Transcendental meromorphic solutions of systems of second-order algebraic differential equations

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【作者】 任国珍高凌云

【Author】 REN Guozhen;GAO Lingyun;Department of Mathematics,Jinan University;

【机构】 暨南大学数学系

【摘要】 利用亚纯函数的Nevanlinna值分布理论和最大模原理,讨论了如下二阶代数微分方程组存在超越亚纯解时,该解的多项式的零点问题,{(w″1n=P1(z,w2)/Q1(z,w2) (w″2n=P2(z,w1)/Q2(z,w1)得到2个结果。结果表明如果该类二阶代数微分方程组存在超越亚纯解(w1(z),w2(z))时,且V1(z,w2)与V2(z,w1)分别为Q1(z,w2)与Q2(z,w1)或P1(z,w2)与P2(z,w1)的质因子,则V1(z)=V1(z,w2)与V2(z)=V2(z,w1)中至少有一个具有无穷多个零点。该结果推广了一阶复微分方程的结论。

【Abstract】 Based on the distribution of Nevanlinna value of meromorphic functions and maximum modulus principle,the zero problems of polynomials is discussed if the following second-order algebraic differential equations exist beyond the meromorphic solutions.{(w″1n=P1(z,w2)/Q1(z,w2) (w″2n=P2(z,w1)/Q2(z,w1)The obtained two results show if the second-order algebraic differential equations of this class have prime factors beyond meromorphic solutions(w1(z),w2(z)),and V1(z,w2)and V2(z,w1)are Q1(z,w2)and Q2(z,w1)or P1(z,w2)and P2(z,w1),respectively,then V1(z)=V1(z,w2),and V2(z)=V2(z,w1),at least one of them has an infinite number of zeros.The presented results generalize the conclusion of the first-order complex differential equations.

【基金】 国家自然科学基金项目(11271161)
  • 【文献出处】 成都理工大学学报(自然科学版) ,Journal of Chengdu University of Technology(Science & Technology Edition) , 编辑部邮箱 ,2020年02期
  • 【分类号】O175;O174.52
  • 【被引频次】1
  • 【下载频次】59
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