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Logarithmic Gysin sequences for regular immersions

Published 5 Apr 2024 in math.AG | (2404.04082v2)

Abstract: For a regular immersion of schemes $Z\to X$ and a cohomology theory of fs log schemes, we formulate the logarithmic Gysin sequence using the "logarithmic compactification" $(\mathrm{Bl}_Z X,E)$ instead of the open complement $X-Z$, where $E$ is the exceptional divisor. We show that all $\mathbb{A}1$-invariant cohomology theories produced from motivic spectra and various non $\mathbb{A}1$-invariant cohomology theories like Nygaard completed prismatic cohomology admit logarithmic Gysin sequences.

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