Effective analysis of integral points on algebraic curves

Effective analysis of integral points on algebraic curves
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代数曲线上积分点的有效分析

DOI:
10.1007/bf02783215
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发表时间:
1995
影响因子:
1
通讯作者:
Y. Bilu
Y. Bilu
中科院分区:
数学2区
文献类型:
--
作者:
Y. Bilu

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设K是代数数域,S是有限赋值集,C是K上的非奇异代数曲线。设x ∈ K(C)为非常数。点P ∈ C(K)是S-积分的,如果它不是x的极点,且|x(P)|v> 1意味着v ∈ S。证明了当(C,x)对满足一定条件时,所有S-整点都可以有效地确定.特别地,如果(i)x:C → P1是Galois覆盖且g(C)≥ 1;(ii) $$\bar Q $$ [x]在 $$\bar Q $$ (C)至少有两个单位乘法独立模 $$\bar Q $$ *. 这推广了A. Baker和其他作者关于丢番图方程有效解的研究。
AbstractLetK be an algebraic number field,S⊇S\t8 a finite set of valuations andC a non-singular algebraic curve overK. Letx∈K(C) be non-constant. A pointP∈C(K) isS-integral if it is not a pole ofx and |x(P)|v>1 impliesv∈S. It is proved that allS-integral points can be effectively determined if the pair (C, x) satisfies certain conditions. In particular, this is the case if(i)x:C→P1 is a Galois covering andg(C)≥1;(ii)the integral closure of $$\bar Q$$ [x] in $$\bar Q$$ (C) has at least two units multiplicatively independent mod $$\bar Q$$ *. This generalizes famous results of A. Baker and other authors on the effective solution of Diophantine equations.