Nadler–Tanaka's point-generation conjecture for Lagrangian cobordisms

Set M=Λ=ptM=\Lambda=pt, consider \Lagpt(pt)\Lag_{pt}(pt), and let

\cE=End\Lagpt(pt)(pt)\cE=\operatorname{End}_{\Lag_{pt}(pt)}(pt)

be the endomorphism E1E_1-algebra spectrum. An object is a generator if its morphisms to every shift detect the zero object, and \cEPerf\cE\operatorname{Perf} denotes the stable \infty-category of perfect \cE\cE-modules.

Nadler–Tanaka's point-generation conjecture. The object pt\Lagpt(pt)pt\in\Lag_{pt}(pt) is a generator, every object of \Lagpt(pt)\Lag_{pt}(pt) is a finite colimit of objects pt[k]pt[k] for kZk\in\mathbb Z, and the Yoneda functor induces an equivalence

\Lagpt(pt)\cEPerf.\Lag_{pt}(pt)\simeq \cE\operatorname{Perf}.

If true, this reduces the study of \Lagpt(pt)\Lag_{pt}(pt) to the endomorphism algebra of its point object. The source gives no resolution of the conjecture.

Sources & referencesView supporting material

Primary source

David Nadler and Hiro Lee Tanaka, “A stable infinity-category of Lagrangian cobordisms”, arXiv:1109.4835 (2020).

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