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arXiv 2203.00705math.AC
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完整的Picard Vessiot闭包

The Complete Picard Vessiot Closure

Andy R. Magid

摘要:

设F是一个微分场,其常数域为C.我们假设C是代数闭的,特征为0。F的完全Picard-Vessiot闭包是F的微分域扩张,具有与F相同的常数C,它没有Picard-Vessiot扩展,并且在具有这些性质的F上是最小的。完全Picard-Vessiot闭包的子域与其微分自同构群的子群之间存在对应关系,这是因为完全Picard-Vessiot闭包通过重复的Picard-Vessiot扩张来自F。这种对应关系也获得了某些正常的子域的完整的皮卡德-Vessiot封闭,领域可以独立的特点,其嵌入在完整的皮卡德-Vessiot封闭。

英文摘要:

Let F be a differential field with field of constants C. We assume C to be algebraically closed and of characteristic 0. The complete Picard--Vessiot closure of F is a differential field extension of F with the same constants C as F, which has no Picard--Vessiot extensions, and is minimal over F with these properties. There is a correspondence between subfields of the complete Picard--Vessiot closure and subgroups of its differential automorphism group, which arises because the complete Picard--Vessiot closure comes from F via repeated Picard--Vessiot extensions. This correspondence also obtains for certain normal subfields of the complete Picard--Vessiot closure, fields which can be characterized independently of their embedding in the complete Picard--Vessiot closure.

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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