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arXiv 1803.09604math.NT
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关于同余数曲线的Fermat定理

A Theorem of Fermat on Congruent Number Curves

Lorenz Halbeisen, Norbert Hungerbühler

摘要:

一个正整数$A$称为全等数,如果$A$是有三条有理边的直角三角形的面积。等价地,$A$是全等数当且仅当全等数曲线$y^2=x^3-A^2x$有一个有理点$(x,y)\in\mathbb Q^2$与$y\neq 0$。利用Fermat定理,给出了全等数曲线不含有穷级的有理点的初等证明。

英文摘要:

A positive integer $A$ is called a congruent number if $A$ is the area of a right-angled triangle with three rational sides. Equivalently, $A$ is a congruent number if and only if the congruent number curve $y^2=x^3-A^2x$ has a rational point $(x,y)\in\mathbb Q^2$ with $y\neq 0$. Using a theorem of Fermat, we give an elementary proof for the fact that congruent number curves do not contain rational points of finite order.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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