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arXiv math/0703888math.NT
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单轴超限直径连续性的结果

Consequences of the Continuity of the Monic Integer Transfinite Diameter

Jan Hilmar

摘要:

本文考虑长度小于4的实区间$I$的幺一整数超限直径的确定问题。我们证明了$t_M([0,x])$作为$x>0$中的一个函数是连续的,从而反驳了Hare和Smyth的两个推论。因此,对于$n>2\in\naturals$,我们定义了量$b_{\max}(n)&=&\sup_{b>\frac{1}{n}}\left\{b|t_M([0,b])=\tfrac{1}{n}\right.\right\}$,并给出了$b_{\max}(n)$的上界。最后,我们改进了$3\leq n\leq 8$的$b_{\max}(n)$的下界。

英文摘要:

We consider the problem of determining the monic integer transfinite diameter for real intervals $I$ of length less than 4. We show that $t_M([0,x])$, as a function in $x>0$, is continuous, therefore disproving two conjectures due to Hare and Smyth. Consequently, for $n>2\in\naturals$, we define the quantity $b_{\max}(n)&=&\sup_{b>\frac{1}{n}}\left\{b|t_M([0,b])=\tfrac{1}{n}\right.\right\}$ and give lower and upper bounds of $b_{\max}(n)$. Finally, we improve the lower bound for $b_{\max}(n)$ for $3\leq n\leq 8$.

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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