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Using Tropical Degenerations For Proving The Nonexistence Of Certain Nets
Tropical Degenerations The Nonexistence Of Certain Nets Algebraic Geometry
2011/9/22
Abstract: A net is a special configuration of lines and points in the projective plane. There are certain restrictions on the number of its lines and points. We proved that there cannot be any (4,4) n...
Exceptional bundles associated to degenerations of surfaces
Exceptional bundles degenerations of surfaces Algebraic Geometry
2011/9/5
Abstract: In 1981 J. Wahl described smoothings of surface quotient singularities with no vanishing cycles. Given a smoothing of a projective surface X of this type, we construct an associated exceptio...