Halphen conditions and postulation of nodes

We give sharp lower bounds for the postulation of the nodes of a general plane projection of a smooth connected curve C in P^r and we study the relationships with the geometry of the embedding. Strict connections with Castelnuovo's theory and Halphen's theory are shown.Comment: LaTeX, 26 page

Sulla proiezione piana generica di un ramo di curva

Si studiano condizioni sotto le quali un ramo di curva spaziale sia equiproiettabile, cioe abbia sequenza delle molteplicita uguale alla sequenza delle molteplicità della sua proiezione generica

On the genus and Hartshorne-Rao module of projective curves

MATH. Z

Postulation of adjoint ideals and geometry of projective curves

Papers from Shreeram S. Abhyankar' s 70th Birthday Conference, Christensen, Sundaram, Sathaye, Bajaj Editors, Springer Verla