正则三元三角形
Regular ternary triangular forms
摘要:
对于某个正整数$x$,形式为$T_x=\frac{x(x+1)}2$的整数称为三角数。正整数$a,b$和$c$的三元三角形形式$aT_{x}+bT_{y}+cT_{z}$称为正则的,如果它表示每个局部表示的正整数。本文证明了正有49个本原正则三元三角形。
英文摘要:
An integer of the form $T_x=\frac{x(x+1)}2$ for some positive integer $x$ is called a triangular number. A ternary triangular form $aT_{x}+bT_{y}+cT_{z}$ for positive integers $a,b$ and $c$ is called regular if it represents every positive integer that is locally represented. In this article, we prove that there are exactly 49 primitive regular ternary triangular forms.
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