Essential Finite Generation of Valuation Rings in Characteristic Zero Algebraic Function Fields
Essential Finite Generation of Valuation Rings in Characteristic Zero Algebraic Function Fields
复制标题
特征零代数函数域中评估环的本质有限生成
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
S. Cutkosky
中科院分区:
文献类型:
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作者:
S. Cutkosky
Let $K$ be a characteristic zero algebraic function field with a valuation $\nu$. Let $L$ be a finite extension of $K$ and $\omega$ be an extension of $\nu$ to $L$. We establish that the valuation ring $V_{\omega}$ of $\omega$ is essentially finitely generated over the valuation ring $V_{\nu}$ of $\nu$ if and only if the initial index $\epsilon(\omega|\nu)$ is equal to the ramification index $e(\omega|\nu)$ of the extension. This gives a positive answer, for characteristic zero algebraic function fields, to a question posed by Hagen Knaf.
影响因子:
1
作者:
Cutkosky, Steven Dale;Novacoski, Josnei
通讯作者:
Novacoski, Josnei
影响因子:
1.3
作者:
Cutkosky, Steven Dale;Sarkar, Parangama;Srinivasan, Hema
通讯作者:
Srinivasan, Hema