On the K<sup>2</sup>of degenerations of surfaces and the multiple point formula
On the K<sup>2</sup>of degenerations of surfaces and the multiple point formula
In this paper we study some properties of reducible surfaces, in particular of unions of planes.When the surface is the central fibre of an embedded flat degeneration of surfaces in a projective space, we deduce some properties of the smooth surface which is the general fibre of the degeneration from …