Coefficient comparison conjecture for logarithmic and ordinary étale motives

Let kk be a field, and suppose that Λ=Z/n\Lambda=\mathbb{Z}/n, where nn is invertible in kk. Let DMlog,eˊteff\operatorname{DM}^{\mathrm{eff}}_{\log,\acute{e}t}, DMlog,eˊt,propeff\operatorname{DM}^{\mathrm{eff}}_{\log,\acute{e}t,\mathrm{prop}}, DMlog,leˊteff\operatorname{DM}^{\mathrm{eff}}_{\log,l\acute{e}t}, DMlog,leˊt,propeff\operatorname{DM}^{\mathrm{eff}}_{\log,l\acute{e}t,\mathrm{prop}}, and DMeˊteff\operatorname{DM}^{\mathrm{eff}}_{\acute{e}t} denote the corresponding effective motive categories, with the superscript prop\mathrm{prop} indicating the proper variant.

Coefficient comparison conjecture. There are equivalences of triangulated categories

DMlog,eˊteffDMlog,eˊt,propeffDMeˊteff,\operatorname{DM}^{\mathrm{eff}}_{\log,\acute{e}t}\leftarrow \operatorname{DM}^{\mathrm{eff}}_{\log,\acute{e}t,\mathrm{prop}}\rightarrow \operatorname{DM}^{\mathrm{eff}}_{\acute{e}t},

and

DMlog,leˊteffDMlog,leˊt,propeffDMeˊteff.\operatorname{DM}^{\mathrm{eff}}_{\log,l\acute{e}t}\leftarrow \operatorname{DM}^{\mathrm{eff}}_{\log,l\acute{e}t,\mathrm{prop}}\rightarrow \operatorname{DM}^{\mathrm{eff}}_{\acute{e}t}.

This predicts that both logarithmic étale theories compare with ordinary étale motives through their proper variants. The source presents it as an expectation and gives partial evidence, but no proof or disproof.

Sources & referencesView supporting material

Primary source

Federico Binda, Doosung Park and Paul Arne Østvær, “Triangulated categories of logarithmic motives over a field”, arXiv:2004.12298 (2021).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.