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arXiv math/0509727math.AGmath.CV
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二元复多项式拓扑的上界

Upper bounds of topology of complex polynomials in two variables

Alexey Glutsyuk

摘要:

本文论述了一个复杂的多项式$H$在两个变量有-一个通用的最高齐次部分(没有多个零线),-非常数较低的条款。特别地,在这些条件下,多项式$H$具有至少两个不同的临界值。我们证明了这一说法的定量版本。假设$H$经过适当规范化(通过图像和源中仿射坐标的变化)我们证明了下列量的上界:-低阶项系数之和; -包含给定水平曲线$S_t=\{ H=t\}$的所有非平凡拓扑的双圆盘的最小尺寸;- $H_1(S_t,\zz)$中的循环的代表的最小长度沿着从$t$到$H$的临界值的适当路径消失;- 后面的循环的交叉指数。所有这些结果(后一个界限除外)都用于我与Yu.S.Ilyashenko的联合工作“希尔伯特第16问题的限制版本”(可在arxiv上获得)。在后一篇文章中,我们得到了一个显式的上界的零点的数目为一个广泛的阿贝尔积分。

英文摘要:

The paper deals with a complex polynomial $H$ in two variables having - a generic highest homogeneous part (without multiple zero lines), - nonconstant lower terms. In particular, under these conditions the polynomial $H$ has at least two distinct critical values. We prove quantitative versions of this statement. Supposing $H$ appropriately normalized (by affine coordinate changes in the image and in the source) we prove upper bounds for the following quantities: - the sum of the coefficients of the lower terms; - the minimal size of a bidisc containing all the nontrivial topology of a given level curve $S_t=\{ H=t\}$; - the minimal lengths of representatives of cycles in $H_1(S_t,\zz)$ vanishing along appropriate paths from $t$ to the critical values of $H$; - the intersection indices of the latter cycles. All these results (expect for the latter bound) are used in my joint work with Yu.S.Ilyashenko "Restricted version of the Hilbert 16-th problem" (available on the arxiv). In the latter paper we obtain an explicit upper bound of the number of zeros for a wide class of Abelian integrals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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