arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1603.00860math.DS
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子簇的好约化与典范高度

Good reduction and canonical heights of subvarieties

Benjamin Hutz

摘要:

通过好约化信息,我们确定了前周期有理子簇轨道周期部分的长度。这个界只取决于映射的次数、子簇的次数、射影空间的维数、数域的次数和好约化的素数。作为证明的一部分,我们延长了相应的好约化的作者证明的点的非奇异品种的所有投影品种。为了证明给定映射周期的绝对界,我们利用Chow形式研究了子簇的典范高,并计算了子簇的典范高与典范高之间的界.这就给出了一个有界度的预周期有理子簇个数的界。给出了超曲面的一个显式界。

英文摘要:

We bound the length of the periodic part of the orbit of a preperiodic rational subvariety via good reduction information. This bound depends only on the degree of the map, the degree of the subvariety, the dimension of the projective space, the degree of the number field, and the prime of good reduction. As part of the proof, we extend the corresponding good reduction bound for points proven by the author for non-singular varieties to all projective varieties. Toward proving an absolute bound on the period for a given map, we study the canonical height of a subvariety via Chow forms and compute the bound between the height and canonical height of a subvariety. This gives the existence of a bound on the number of preperiodic rational subvarieties of bounded degree for a given map. An explicit bound is given for hypersurfaces.

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