T. Köppe

collaborators

2 papers

math.AG2009

Smoothing of rational m-ropes

Edoardo Ballico, Elizabeth Gasparim, Thomas Köppe

In a recent paper, Gallego, González and Purnaprajna showed that rational 3-ropes can be smoothed. We generalise their proof and obtain smoothability of rational $m$ -ropes for $m \…

math.AG2004

Vector bundles near negative curves: moduli and local Euler characteristic

Edoardo Ballico, Elizabeth Gasparim, Thomas Köppe

We study moduli spaces of vector bundles on a two-dimensional neighbourhood $Z_{k}$ of an irreducible curve $ℓ = C P^{1}$ with $ℓ^{2} = - k$ and give an explicit construction of thes…