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- W4300695740 abstract "Throughout this paper we study the existence of irreducible curves C on smooth projective surfaces S with singular points of prescribed topological types S_1,...,S_r. There are necessary conditions for the existence of the type sum_{i=1}^r mu(S_i) < aC^2+bC.K+c+1 for some fixed divisor K on S and suitable coefficients a, b and c, and the main sufficient condition that we find is of the same type, saying it is asymptotically optimal. Even for the case where S is the projective plane, ten years ago general results of this quality have not been known. An important ingredient for the proof is a vanishing theorem for invertible sheaves on the blown up S of the form O_{S'}(pi^*D-sum_{i=1}^r m_iE_i), deduced from the Kawamata-Vieweg Vanishing Theorem. Its proof covers the first part of the paper, while the middle part is devoted to the existence theorems. In the last part we investigate our conditions on ruled surfaces, products of elliptic curves, surfaces in projective 3-space, and K3-surfaces." @default.
- W4300695740 created "2022-10-04" @default.
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- W4300695740 date "2001-04-05" @default.
- W4300695740 modified "2023-10-06" @default.
- W4300695740 title "Existence of Curves with Prescribed Topological Singularities" @default.
- W4300695740 doi "https://doi.org/10.48550/arxiv.math/0104062" @default.
- W4300695740 hasPublicationYear "2001" @default.
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