Motivic Gersten's conjecture

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Let RR be a commutative regular local ring, let MRp\mathcal{M}_R^p denote the exact category of finitely generated RR-modules supported in codimension at least pp, and let M#M_{\#}, for #∈{add⁡,loc⁡}\#\in\{\operatorname{add},\operatorname{loc}\}, be the corresponding additive or localizing motive in Ho⁡(M ⁣ ⁣otdg⁡#)\operatorname{Ho}({\mathcal{M}\!\!ot}^{\#}_{\operatorname{dg}}). For integers 1≤p≤dim⁡R1\leq p\leq\dim R, consider the inclusion functor MRp−1↪MRp\mathcal{M}_R^{p-1}\hookrightarrow\mathcal{M}_R^p.

Motivic Gersten's conjecture. For any commutative regular local ring RR and any integers 1≤p≤dim⁡R1\leq p\leq\dim R, the inclusion functor MRp−1↪MRp\mathcal{M}_R^{p-1}\hookrightarrow\mathcal{M}_R^p induces the zero morphism

M#(MRp−1)→M#(MRp)M_{\#}(\mathcal{M}_R^{p-1})\to M_{\#}(\mathcal{M}_R^p)

in Ho⁡(M ⁣ ⁣otdg⁡#)\operatorname{Ho}({\mathcal{M}\!\!ot}^{\#}_{\operatorname{dg}}), where #∈{add⁡,loc⁡}\#\in\{\operatorname{add},\operatorname{loc}\}.

This is a motivic strengthening or analogue of the KK-theoretic Gersten conjecture. The paper presents it as a question in the motivic setting, and the supplied text gives no resolution status.

References

Primary source

Satoshi Mochizuki, “A survey of Gersten's conjecture”, arXiv:1608.08114 (2016).

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