arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1406.7571math.NT
收藏

端点对称连分数与二次同余方程

End-symmetric continued fractions and quadratic congruences

Barry R. Smith

摘要:

我们证明了对于一个固定的整数$n \neq \pm2$,同余$x^2 + nx \pm 1 \equiv 0 \pmodα$有解$β$与$0 < β< α$当且仅当$α/β$有一个连分数展开与序列的连续性具有有限数量的可能的不对称类型之一。这推广了旧的定理,即一个有理数$α/β> 1$在最低项有一个对称的连分数时,正好$β^2 \equiv \pm 1 \pmodα$。

英文摘要:

We show that for a fixed integer $n \neq \pm2$, the congruence $x^2 + nx \pm 1 \equiv 0 \pmodα$ has the solution $β$ with $0 < β< α$ if and only if $α/β$ has a continued fraction expansion with sequence of quotients having one of a finite number of possible asymmetry types. This generalizes the old theorem that a rational number $α/β> 1$ in lowest terms has a symmetric continued fraction precisely when $β^2 \equiv \pm 1 \pmodα$.

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。

↑