A Diophantine equation with the harmonic mean

被引:1
|
作者
Zhang, Yong [1 ,2 ]
Chen, Deyi [3 ]
机构
[1] Changsha Univ Sci & Technol, Sch Math & Stat, Changsha, Hunan, Peoples R China
[2] Hunan Prov Key Lab Math Modeling & Anal Engn, Changsha 410114, Hunan, Peoples R China
[3] Zhejiang Univ, Sch Math Sci, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Diophantine equation; Pell's equation; Integer solutions; Rational parametric solutions; F(X)F(Y);
D O I
10.1007/s10998-019-00302-4
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let f is an element of Q[x] be a polynomial without multiple roots and degf >= 2. We give conditions for f=x2+bx+cunder which the Diophantine equation 2f(x)f(y)=f(z)(f(x)+f(y))\ has infinitely many nontrivial integer solutions and prove that this equation has infinitely many rational parametric solutions for f=x2+bx with nonzero integer b. Moreover, we show that it has a rational parametric solution for infinitely many cubic polynomials.
引用
收藏
页码:138 / 144
页数:7
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