Explicit Resolutions of Double Point Singularities of Surfaces

Explicit Resolutions of Double Point Singularities of Surfaces

Locally analytically, any isolated double point occurs as a double covering of a smooth surface. It can be desingularized via the canonical resolution, as it is well-known. In this paper we explicitly compute the fundamental cycle of both the canonical and minimal resolution of a double point singul...

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Veröffentlicht in:arXiv.org 2002-03
Hauptverfasser: Calabri, Alberto, Ferraro, Rita
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description Locally analytically, any isolated double point occurs as a double covering of a smooth surface. It can be desingularized via the canonical resolution, as it is well-known. In this paper we explicitly compute the fundamental cycle of both the canonical and minimal resolution of a double point singularity and we classify those for which the fundamental cycle differs from the fiber cycle. Finally we compute the conditions that a double point imposes to pluricanonical systems.
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title Explicit Resolutions of Double Point Singularities of Surfaces
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