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- W4309131034 abstract "This paper can be seen as an update to part of the author's dissertation. We study the mod $p$ cohomology of the pro-$p$ Iwahori subgroups $I$ of $operatorname{SL}_{n}(mathbb Q_{p})$ (and $operatorname{GL}_{n}(mathbb{Q}_{p})$) for $n=2$ and $n=3$. Here we use the spectral sequence $E_{1}^{s,t} = H^{s,t}(mathfrak{g},mathbb{F}_{p}) Longrightarrow H^{s+t}(I,mathbb{F}_{p})$ due to Sorensen, and we do explicit calculations with an ordered basis of $I$, which gives us a basis of $mathfrak{g} = mathbb{F}_{p} otimes_{mathbb{F}_{p}[pi]} operatorname{gr} I$ that we use to calculate $H^{s,t}(mathfrak{g},mathbb{F}_{p})$. We note that the multiplicative spectral sequence $E_{1}^{s,t} = H^{s,t}(mathfrak{g},mathbb{F}_{p})$ collapses on the first page by noticing that all maps on each page are necessarily trivial, and this allows us to describe the above group cohomology groups and all cup products. Finally we note some connections to cohomology of central division algebras over $mathbb{Q}_{p}$ and point out some future research directions." @default.
- W4309131034 created "2022-11-23" @default.
- W4309131034 creator A5028881874 @default.
- W4309131034 date "2022-11-13" @default.
- W4309131034 modified "2023-10-14" @default.
- W4309131034 title "On the Mod $p$ Cohomology of Pro-$p$ Iwahori Subgroups of $operatorname{SL}_{n}(mathbb Q_{p})$" @default.
- W4309131034 doi "https://doi.org/10.48550/arxiv.2211.06819" @default.
- W4309131034 hasPublicationYear "2022" @default.
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