Conjecture on derived contraction algebras determining stable endomorphism dgas

Let AA be an algebra with idempotent ee, let MM be the corresponding maximal Cohen–Macaulay module, and write

A/LAeAA/^{\mathbb{L}}AeA

for the derived quotient. Assume that A/AeAA/AeA is an Artinian local algebra. Derived contraction algebra conjecture. The quasi-isomorphism type of the derived quotient determines the quasi-isomorphism type of

REndR(M){\mathrm{\mathbb{R}}}\underline{\mathrm{End}}_{R}(M)

as a differential graded algebra over k[θ,θ1]k[\theta,\theta^{-1}]. This would formalize the idea that the stable endomorphism dga is obtained from the derived quotient by adjoining the inverse of the periodicity element. The source presents this as a natural conjecture; no resolution is supplied.

Sources & referencesView supporting material

Primary source

Matt Booth, “The derived contraction algebra”, arXiv:1911.09626 (2019).

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