On the Grothendieck–Serre conjecture on principal bundles in mixed characteristic

On the Grothendieck–Serre conjecture on principal bundles in mixed characteristic
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混合特征主丛上的格洛腾迪克塞尔猜想

DOI:
10.1090/tran/8490
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发表时间:
2022
影响因子:
1.3
通讯作者:
Fedorov, Roman
Fedorov, Roman
中科院分区:
数学1区
文献类型:
--
作者:
Fedorov, Roman

文献摘要

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设为正则局部环。设是一个约化群方案。Grothendieck和Serre的一个猜想预言,如果一个主丛在的商域上平凡,则它是平凡的。当包含一个域时,这个猜想是已知的。在分裂的情况下,证明了一大类不含域的正则局部环的猜想。参考文献
Letbe a regular local ring. Letbe a reductive-group scheme. A conjecture of Grothendieck and Serre predicts that a principal-bundle overis trivial if it is trivial over the quotient field of. The conjecture is known whencontains a field. We prove the conjecture for a large class of regular local rings not containing fields in the case whenis split. References