2 citations · 3 across the 4 of their papers we have counts for
4 papers
Classification of quadruple Galois canonical covers I
Francisco J. Gallego, B. P. Purnaprajna
In this article we classify quadruple Galois canonical covers of smooth surfaces of minimal degree. The classification shows that they are either non-simple cyclic covers or bi-dou…
Higher Syzygies of Elliptic Ruled Surfaces
Francisco Gallego, B. P. Purnaprajna
Let L be a normally generated line bundle on X; we say L satisfies property N_p (notation after Mark Green) if the matrices in the free resolution of R (the homogeneous coordinate…
Normal presentation on Elliptic Ruled surfaces
Francisco Gallego, B. P. Purnaprajna
In this article we determine exactly which line bundles on elliptic ruled surface X are normally presented. In particular we see that numerical classes of normally presented diviso…
A few general points of the Hilbert scheme of K3 surfaces
Francisco Gallego, B. P. Purnaprajna
A ribbon D over a variety C is a scheme such that D_{red} = C, the ideal I in O_D of Cis a line bundle on C and I^2 = 0. A two dimensional ribbon is called a carpet. In this articl…