Nadler–Tanaka's stratified constructible-sheaf conjecture

Let XX be Whitney stratified by strata XαX_\alpha, αA\alpha\in A, set M=TXM=T^*X, and let

Λ=αATXαX\Lambda=\coprod_{\alpha\in A}T^*_{X_\alpha}X

be the union of their conormals. Set \cE=End\Lagpt(pt)(pt)\cE=\operatorname{End}_{\Lag_{pt}(pt)}(pt), and let PerfA(X,\cE)\operatorname{Perf}_A(X,\cE) denote the stable \infty-category of perfect AA-constructible sheaves of \cE\cE-modules.

Nadler–Tanaka's stratified constructible-sheaf conjecture. There is a canonical equivalence of stable \infty-categories

PerfA(X,\cE)\LagΛ(TX).\operatorname{Perf}_A(X,\cE)\simeq \Lag_\Lambda(T^*X).

This extends the zero-section case from ordinary constructible sheaves to sheaves constructible with respect to a Whitney stratification. The source relates the claim to expected descriptions of Fukaya categories but gives no resolution.

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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