Rigidity criterion for dualizing DG modules

Let AA be a tractable commutative DG ring with traction KA\mathbb{K}\to A, and let (M,ρ)(M,\rho) be a rigid DG module over AA relative to K\mathbb{K}. Write Aˉ=H0(A)\bar A=\operatorname{H}^0(A) and let SpecAˉ\operatorname{Spec}\bar A be its spectrum. Assume that MDf+(A)M\in\operatorname{\mathsf{D}}^+_{\mathrm f}(A) and that MM is nonzero on each connected component of SpecAˉ\operatorname{Spec}\bar A. Rigidity criterion conjecture. Then MM is a dualizing DG AA-module.

This conjecture gives a criterion for recognizing dualizing DG modules from rigidity and finiteness. Its status is not resolved in the supplied text.

Sources & referencesView supporting material

Primary source

Amnon Yekutieli, “Duality and Tilting for Commutative DG Rings”, arXiv:1312.6411 (2016).

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