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arXiv 1702.04831math.RT
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幂幺群格式的上同调

Cohomology of unipotent group schemes

Eric M. Friedlander

摘要:

我们验证了通用类的上同调的$GL_N$确定明确的上同调类的Frobenius内核$G_{(r)}$的各种线性代数群$G$。我们考虑了$\varprojlim_r H^*(U_{(r)},k)$与许多幂单代数群$U$的有理上同调$H^*(U,k)$的关系。本文的后半部分详细研究了海森堡群$U_3 \subset GL_3$的Frobenius核$(U_3)_{(r)}$的上同调。

英文摘要:

We verify that universal classes in the cohomology of $GL_N$ determine explicit cohomology classes of Frobenius kernels $G_{(r)}$ of various linear algebraic groups $G$ . We consider the relationship of $\varprojlim_r H^*(U_{(r)},k)$ to the rational cohomology $H^*(U,k)$ of many unipotent algebraic groups $U$. The second half of this paper investigates in detail the cohomology of Frobenius kernels $(U_3)_{(r)}$ of the Heisenberg group $U_3 \subset GL_3$.

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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