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arXiv 2005.03628math.AGmath.DSmath.NT
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射影曲面的满射自同态:无穷多个稠密轨道的存在性

Surjective endomorphisms of projective surfaces: the existence of infinitely many dense orbits

Jia Jia, Junyi Xie, De-Qi Zhang

摘要:

设$f \colon X \to X$是正规射影曲面的满射自同态。当$\operatorname{deg} f \geq 2$,应用$f$ -等变极小模型程序(EMMP)的迭代,确定了$X$的几何结构.利用这一点,我们将第二作者的结果扩展到奇异曲面,使$X$有一个$f$不变的非常数有理函数,或$f$有无穷多个Zerkiki稠密前向轨道;这一结果也扩展到Adelic拓扑(比Zerkiki拓扑更精细)。

英文摘要:

Let $f \colon X \to X$ be a surjective endomorphism of a normal projective surface. When $\operatorname{deg} f \geq 2$, applying an (iteration of) $f$-equivariant minimal model program (EMMP), we determine the geometric structure of $X$. Using this, we extend the second author's result to singular surfaces to the extent that either $X$ has an $f$-invariant non-constant rational function, or $f$ has infinitely many Zariski-dense forward orbits; this result is also extended to Adelic topology (which is finer than Zariski topology).

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