On cubics and quartics through a canonical curve

Details On cubics and quartics through a canonical curve On cubics and quartics through a canonical curve

2003-04-26

arxiv.org/abs/math/0304422v1

Mathematics

Algebraic Geometry

16 pages

Scientific paper

We construct families of quartic and cubic hypersurfaces through a canonical curve, which are parametrized by an open subset in a Grassmannian and a Flag variety respectively. Using G. Kempf's cohomological obstruction theory, we show that these families cut out the canonical curve and that the quartics are birational (via a blowing-up of a linear subspace) to quadric bundles over the projective plane, whose Steinerian curve equals the canonical curve.

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