Page 1 Next

Displaying 1 – 20 of 632

Showing per page

A criterion for virtual global generation

Indranil Biswas, A. J. Parameswaran (2006)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

Let X be a smooth projective curve defined over an algebraically closed field k , and let F X denote the absolute Frobenius morphism of X when the characteristic of k is positive. A vector bundle over X is called virtually globally generated if its pull back, by some finite morphism to X from some smooth projective curve, is generated by its global sections. We prove the following. If the characteristic of k is positive, a vector bundle E over X is virtually globally generated if and only if ( F X m ) * E E a E f for...

A curve of genus q with a Half-Canonical embedding in 𝐏 3

Sevin Recillas (1984)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

Si costruiscono curve di genere g = 4 n 3 , n 3 che hanno 2 n - 3 ( 2 n - 2 - 1 ) fasci semicanonici L tali che h 0 ( L ) = 4 . Per n + 3 si dimostra che gli L sono molto ampi.

Currently displaying 1 – 20 of 632

Page 1 Next