Fujino's logarithmic injectivity conjecture

Let XX be a compact Kähler manifold and let a a be a simple normal crossing divisor on XX. Let L \mathcal L be a semipositive line bundle on XX, and let ss be a nonzero holomorphic section of Lk \mathcal L^{\otimes k} on XX for some positive integer kk. Assume that (s=0)(s=0) contains no strata of Δ \Delta.

Fujino's logarithmic injectivity conjecture. The multiplication homomorphism

×s:Hi(X,ωXOX(Δ)Ll)Hi(X,ωXOX(Δ)L(l+k)),\times s: H^i(X, \omega_X\otimes \mathcal O_X(\Delta)\otimes \mathcal L^{\otimes l}) \to H^i(X, \omega_X\otimes \mathcal O_X(\Delta)\otimes \mathcal L^{\otimes (l+k)}),

induced by s \otimes s, is injective for every positive integer ll and every ii.

This conjecture is presented as related to Kollár's and Enoki's injectivity theorems; the source does not state its resolution.

Sources & referencesView supporting material

Primary source

Osamu Fujino, “On semipositivity, injectivity and vanishing theorems”, arXiv:1503.06503 (2016).

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