Simple Models of Quasihomogeneous Projective 3-Folds

الأصل · EN

Let X be a projective complex 3-fold, quasihomogeneous with respect to an action of a linear algebraic group. We show that X is a compactification of SL₂/G, G a discrete subgroup, or that X can be equivariantly transformed into the 3-dim. projective space, the quadric Q₃, or into certain quasihomogeneous bundles with very simple structure.