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arXiv 2609.29107math.DSmath.AGmath.NT

关于仿射空间正则自同态的DML(1)性质:$\mathbb{G}_m$情形

On the DML(1) property for regular endomorphisms of affine spaces: the $\mathbb{G}_m$-case

She Yang, Aoyang Zheng

AI总结:

本文证明在仿射空间正则自同态下,若不可约曲线与某点的轨道有无限交集且其正规化为$\mathbb{G}_m$,则该曲线是周期的,验证了动力Mordell-Lang猜想在该情形下的预期结论。

AI中文摘要:

设$f$为$\mathbb{A}_{\mathbb{C}}^N$的正则自同态,$C\subseteq\mathbb{A}_{\mathbb{C}}^N$为不可约曲线。假设$C$与点$x\in\mathbb{A}^N(\mathbb{C})$的$f$-轨道有无限交集。则$C$的正规化同构于$\mathbb{A}^1$或$\mathbb{G}_m$。我们证明在后一种情形下$C$是$f$-周期的,正如动力Mordell-Lang猜想所预期。

英文摘要:

Let $f$ be a regular endomorphism of $\mathbb{A}_{\mathbb{C}}^N$ and let $C\subseteq\mathbb{A}_{\mathbb{C}}^N$ be an irreducible curve. Suppose $C$ has an infinite intersection with the $f$-orbit of a point $x\in\mathbb{A}^N(\mathbb{C})$. Then the normalization of $C$ is isomorphic to either $\mathbb{A}^1$ or $\mathbb{G}_m$. We prove that $C$ is $f$-periodic in the latter case, as expected by the dynamical Mordell-Lang conjecture.

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