Pure matching curves and finite discrete indecomposable modules

Assume that the ground ring kk is a field. Let JT\mathscr{J}_\mathcal{T} and GT\mathscr{G}_\mathcal{T} be the algebras appearing in the construction, and let

ν:D(JT)D(GT)D(GT)\nu:\mathcal{D}(\mathscr{J}_\mathcal{T})^\heartsuit\simeq \mathcal{D}(\mathscr{G}_\mathcal{T})^\heartsuit \hookrightarrow \mathcal{D}(\mathscr{G}_\mathcal{T})

be the inclusion of the heart. A finite pure matching curve is a pure matching curve with finitely many segments, and MγM_\gamma denotes the associated GT\mathscr{G}_\mathcal{T}-module; a finite discrete indecomposable JT\mathscr{J}_\mathcal{T}-module is an indecomposable module of the stated discrete type. Pure matching-curve classification conjecture. The functor ν\nu restricts to a bijection between the isomorphism classes of GT\mathscr{G}_\mathcal{T}-modules of the form MγM_\gamma, with γ\gamma a finite pure matching curve, and the isomorphism classes of finite discrete indecomposable JT\mathscr{J}_\mathcal{T}-modules. This conjectural bijection would identify the indecomposable objects of the heart on the geometric side with finite discrete indecomposable modules; the source gives no resolution, so the conjecture remains open.

Sources & referencesView supporting material

Primary source

Merlin Christ, “Geometric models for the derived categories of Ginzburg algebras of n-angulated surfaces via local-to-global principles”, arXiv:2107.10091 (2023).

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