Effective descent conjecture for finitely presented module spectra

From papers

Let A,A1,A2,A12A,A_1,A_2,A_{12} be noetherian E1\mathbb{E}_1-Banach rings in the indicated simplicial ind-Banach categories. Suppose that their homotopy rings fit into a short strictly exact gluing sequence

0π0(A)π0(A1)π0(A2)π0(A12)0,0\longrightarrow\pi_0(A)\longrightarrow\pi_0(A_1)\oplus\pi_0(A_2)\longrightarrow\pi_0(A_{12})\longrightarrow 0,

that the images of π0(Ai)\pi_0(A_i) in π0(A12)\pi_0(A_{12}) are dense, that each map π0(Ai)π0(A12)\pi_0(A_i)\to\pi_0(A_{12}) is flat, and that A,A1,A2,A12A,A_1,A_2,A_{12} form the corresponding derived gluing sequence. Effective descent conjecture. The map Ai=1,2AiA\to\prod_{i=1,2}A_i is an effective descent morphism with respect to finitely presented left module spectra, meaning modules whose π0\pi_0 is finitely presented. This asserts descent for finitely presented module spectra in the derived gluing situation; the supplied text gives examples motivating the setup but does not state whether the claim has been proved or disproved.

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Sources & referencesView supporting material

Primary source

Xin Tong, “Period Rings with Big Coefficients and Applications III”, arXiv:2102.10692 (2021).

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