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arXiv 2406.07552math.RA
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特征2下带受限导子的受限李代数的上同调

Cohomology of a restricted Lie algebra with a restricted derivation in characteristic 2

Dan Mao, Liangyun Chen

AI总结:

本文针对特征2下带受限导子的受限李代数构建 ResLieDer 对的受限表示与上同调理论,并刻画刚性、形变、中心扩张及导子扩张。

摘要:

本文主要研究特征2下的 ResLieDer 对,即一个带有受限导子的受限李代数。我们定义了 ResLieDer 对的受限表示以及相应的上同调复形。我们证明了当第二上同调群平凡时,ResLieDer 对是刚性的;并且一个 n 阶形变可扩张当且仅当其阻碍类平凡。此外,我们证明 ResLieDer 对的中心扩张由第二上同调群分类。最后,我们表明一对受限导子可扩张当且仅当其阻碍类平凡。

英文摘要:

This paper mainly studies the ResLieDer pair in characteristic 2, that is, a restricted Lie algebra with a restricted derivation. We define the restricted representation of a ResLieDer pair and the corresponding cohomology complex. We show that a ResLieDer pair is rigid if the second cohomology group is trivial and a deformation of order $n$ is extensible if and only if its obstruction class is trivial. Moreover, we prove that the central extensions of a ResLieDer pair are classified by the second cohomology group. Finally, we show that a pair of restricted derivations is extensible if and only if its obstruction class is trivial.

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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