2 papers
math.AG2025
Positivity of line bundles on general blow ups of Hirzebruch surfaces
Cyril J. Jacob, Bivas Khan
We investigate various positivity properties of line bundles on general blow ups of Hirzebruch surfaces motivated by \cite{Han}, where the author has studied general blow ups of $\…
math.AG2025
Seshadri constants and negative curves on blowups of ruled surfaces
Cyril J. Jacob, Bivas Khan, Ronnie Sebastian
In this article we compute Seshadri constants of ample line bundles on the blowup of Hirzebruch surface at very general points. Similarly, we comput…