7 citations · 13 across the 5 of their papers we have counts for
4 papers · 1 filter
Geometry on nodal curves
Ziv Ran
Given a family of nodal curves, we construct canonically and compatibly with base-change, via an explicit blow-up of the Cartesian product , a family parame…
Enumerative geometry of divisorial families of rational curves
Ziv Ran
This revision contains some additional corrections and references, including a reference to Zeuthen suggested by Kleiman. For possible subsequent revisions, check http://math.ucr.e…
The (-1) twist
Ziv Ran
We extend the results of the eprint math.AG/0204256, obtained with Herb Clemens, about sections of nonnegative twists of the canonical bundle of subvarieties of generic hypersurfac…
On the geometric genus of subvarieties of generic hypersurfaces
Herbert Clemens, Ziv Ran
We prove some lower bounds on certain nonegative twists of the canonical bundle of a subvariety of a generic hypersurface in projective space. In particular we prove that the gener…