半平面中的三个省略值与非Blaschke点除子
Three omitted values and non-Blaschke point divisors in half-planes
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中文总结 AI 辅助
本研究构造了实亚纯函数反例,证明存在满足三点原像含于实轴、但半平面内非有界型且所有a-点除子不满足Blaschke条件的函数,否定了Nevanlinna1925年提出的百年悬题,核心构造由GPT-5.6 Sol Ultra自主生成。
中文摘要 AI 辅助
我们构造了一个定义在$\u2102$上的实亚纯函数$F$,满足$F^{-1}(\{0,1,\infty\})\subset\u211d$,但$F$在上下两个半平面中都不属于有界型函数。更强的结论是,对每个$a\in\widehat{\u2102}\setminus\{0,1,\infty\}$,其在任意半平面内的$a$-点除子都不满足Blaschke条件。该构造独立给出了一个可追溯至Nevanlinna 1925年工作、悬置逾百年的问题的否定答案。通过后复合操作,可对黎曼球面上任意指定的三个互异值构造类似反例。核心构造与证明由GPT-5.6 Sol Ultra的自主运行生成。
英文摘要
We construct a real meromorphic function $F$ on $\mathbb C$ such that $F^{-1}(\{0,1,\infty\})\subset\mathbb R$, while $F$ is not of bounded type in either half-plane. More strongly, for every $a\in\widehat{\mathbb C}\setminus\{0,1,\infty\}$, the $a$-point divisor in either half-plane fails the Blaschke condition. Thus the construction provides an independent negative answer to a question going back to Nevanlinna's 1925 work that had remained open for over a century. Postcomposition gives the analogous counterexample for any prescribed triple of distinct values in the Riemann sphere. The core construction and proof were generated during an autonomous run of GPT-5.6 Sol Ultra.
发表机构
- Xi’an Jiaotong University(西安交通大学)
- Chongqing Normal University(重庆师范大学)
- Southeast University(东南大学)
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