微分伽罗瓦群、特殊化与Matzat猜想
Differential Galois groups, specializations and Matzat's conjecture
AI总结:
本文研究代数簇参数化的线性微分方程族,证明一般纤维微分伽罗瓦群特殊化为各点纤维微分伽罗瓦群的点集Zariski稠密,并由此完整证明了Matzat猜想:特征零代数闭域上一元函数域的绝对微分伽罗瓦群是自由proalgebraic群。
摘要:
我们研究由代数簇 $\mathcal{X}$ 参数化的线性微分方程族,并证明所有点 $x\in \mathcal{X}$ 的集合——使得一般纤维上的微分伽罗瓦群特殊化为 $x$ 处纤维上的微分伽罗瓦群——在 $\mathcal{X}$ 中是Zariski稠密的。作为一个应用,我们完整地证明了Matzat猜想:特征零代数闭域上一元函数域的绝对微分伽罗瓦群是一个自由proalgebraic群。
英文摘要:
We study families of linear differential equations parametrized by an algebraic variety $\mathcal{X}$ and show that the set of all points $x\in \mathcal{X}$, such that the differential Galois group at the generic fibre specializes to the differential Galois group at the fibre over $x$, is Zariski dense in $\mathcal{X}$. As an application, we prove Matzat's conjecture in full generality: The absolute differential Galois group of a one-variable function field over an algebraically closed field of characteristic zero is a free proalgebraic group.
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。