Local embeddings of lines in singular hypersurfaces
Lines on hypersurfaces with isolated singularities are classified. New normal forms of simple singularities with respect to lines are obtained. Several invariants are introduced.
Lines on hypersurfaces with isolated singularities are classified. New normal forms of simple singularities with respect to lines are obtained. Several invariants are introduced.
We give a sufficient condition for a (resp. )-totally real, complex-tangential, -dimensional submanifold in a weakly pseudoconvex boundary of class (resp. ) to be a local peak set for the class (resp. ). Moreover, we give a consequence of it for Catlin’s multitype.
In this paper we study a notion of local volume for Cartier divisors on arbitrary blow-ups of normal complex algebraic varieties of dimension greater than one, with a distinguished point. We apply this to study an invariant for normal isolated singularities, generalizing a volume defined by J. Wahl for surfaces. We also compare this generalization to a different one arising in recent work of T. de Fernex, S. Boucksom, and C. Favre.
Some known localization results for hyperconvexity, tautness or -completeness of bounded domains in are extended to unbounded open sets in .