The module-category pullback conjecture for commutative semiring infinity-categories

About 10 years old · traced to

Let R∈CAlg⁡Fin⁡\mathcal{R}\in\operatorname{CAlg}_{\operatorname{Fin}} and let L\mathcal{L} be a cyclic commutative algebra over R\mathcal{R}, meaning a commutative Fin⁡\operatorname{Fin}-algebra with essentially surjective map R→L\mathcal{R}\to\mathcal{L}. Let Mod⁡L(SymMon⁡∞⊗)\operatorname{Mod}_{\mathcal{L}}(\operatorname{SymMon}_\infty^\otimes) and Mod⁡R(SymMon⁡∞⊗)\operatorname{Mod}_{\mathcal{R}}(\operatorname{SymMon}_\infty^\otimes) denote the corresponding infinity-categories of module objects, and similarly let Mod⁡Mdl⁡(L)(Pr⁡∞L⁡,⊗)\operatorname{Mod}_{\operatorname{Mdl}(\mathcal{L})}(\operatorname{Pr}^{\operatorname{L},\otimes}_\infty) and Mod⁡Mdl⁡(R)(Pr⁡∞L⁡,⊗)\operatorname{Mod}_{\operatorname{Mdl}(\mathcal{R})}(\operatorname{Pr}^{\operatorname{L},\otimes}_\infty) denote the presentable module categories. Module-category pullback conjecture. The square

\xymatrix{ \operatorname{Mod}_{\mathcal{L}}(\operatorname{SymMon}_\infty^\otimes)\ar[r]\ar[d] &\operatorname{Mod}_{\mathcal{R}}(\operatorname{SymMon}_\infty^\otimes)\ar[d] \\ \operatorname{Mod}_{\operatorname{Mdl}(\mathcal{L})}(\operatorname{Pr}^{\operatorname{L},\otimes}_\infty)\ar[r] &\operatorname{Mod}_{\operatorname{Mdl}(\mathcal{R})}(\operatorname{Pr}^{\operatorname{L},\otimes}_\infty). }

is a pullback square. This proposed extension concerns the full infinity-categories of modules and is described by the authors as harder to prove; the preceding proposition establishes the analogous equivalence on classifying spaces of coherent module structures, but no resolution of this stronger statement is supplied.

References

Primary source

John D. Berman, “On the Commutative Algebra of Categories”, arXiv:1606.05606 (2018).

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.