Mustață–Popa's local cohomological vanishing conjecture

Suppose XX is embedded in a smooth variety YY of dimension dd. Choose a log resolution

f:ZYf:Z\rightarrow Y

of the pair (Y,X)(Y,X) that is an isomorphism away from XX, and let

E=f1(X)red.E=f^{-1}(X)_{\operatorname{red}}.

Thus EE is a simple normal crossings divisor on ZZ. Mustață–Popa's conjecture. If depthOXj+2\operatorname{depth} \mathscr{O}_X\geq j+2, then

Rd2fΩYdj(logE)=0.R^{d-2}f_*\Omega_Y^{d-j}(\log E)=0.

The conjecture relates depth of the structure sheaf to vanishing in the Hodge filtration on local cohomology. The supplied source does not state whether it has been resolved, so its status is recorded as open here.

Sources & referencesView supporting material

Primary source

Andrew Burke, “Local Cohomological Defect and a Conjecture of Mustata-Popa”, arXiv:2602.05197 (2026).

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