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- W2016067314 abstract "Let L be a normally generated line bundle on X; we say L satisfies property N_p (notation after Mark Green) if the matrices in the free resolution of R (the homogeneous coordinate ring of X) over S (the homogeneous coordinate ring of the projective space corresponding to the complete linear series |L|) have linear entries until the p-th stage. In this article we prove the following result: Let X be an elliptic ruled surface and let L be a product of p+1 base point free and ample line bundles on X. Then L satisfies property N_p. In particular we prove that numerical classes of all divisors which satisfies property N_p form a convex set. (Recall that Num(X) is generated by the class of a minimal section C_0 and by the class of a fiber f and that C_0 is ample.) As a corollary of the above result we show that the adjoint bundle K_X+(2p+3)A satisfies property N_p, if A is an ample line bundle." @default.
- W2016067314 created "2016-06-24" @default.
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- W2016067314 date "1996-12-01" @default.
- W2016067314 modified "2023-10-18" @default.
- W2016067314 title "Higher Syzygies of Elliptic Ruled Surfaces" @default.
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- W2016067314 doi "https://doi.org/10.1006/jabr.1996.0389" @default.
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