Urbinati's global generation conjecture for Weil divisors

Let XX be a complex normal projective variety and DD a Weil divisor on XX. Global generation conjecture. There is an ample Cartier divisor HH on XX such that for any mNm \in \mathbb N, the sheaf OX(m(D+H))\mathscr O_X(m(D+H)) is globally generated.

The conjecture is closely related to discreteness of jumping numbers: a proof would give an unconditional positive answer to that question. The paper establishes a weak form for isolated points of the non-Q\mathbb Q-Cartier locus of DD.

Sources & referencesView supporting material

Primary source

Patrick Graf, “The jumping coefficients of non-Q-Gorenstein multiplier ideals”, arXiv:1410.5091 (2015).

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