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arXiv · 1812.10890

Gysin triangles in the category of motifs with modulus

Keiho Matsumoto
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Abstract

In this paper, we study a Gysin triangle in the category of motives with modulus. We can understand this Gysin triangle as a motivic lift of the Gysin triangle of log-crystalline cohomology due to Nakkajima and Shiho. After that we compare motives with modulus and Voevodsky motives. The corollary implies that an object in the category of motives with modulus decomposes into a $p$-torsion part and a Voevodsky motive part. We can understand the corollary as a motivic analogue of the relationship between rigid cohomology and log-crystalline cohomology.

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Keiho Matsumoto. 2018-12-28. Gysin triangles in the category of motifs with modulus. https://doi.org/10.1017/s1474748021000554

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