26 papers
Seshadri constants of Higgs Vector bundles
Krishna Hanumanthu, Snehajit Misra, Nabanita Ray
We define Seshadri constants for Higgs bundles on smooth projective varieties over algebraically closed fields of characteristic zero. This definition is inspired by and analogous…
Rationality of Seshadri constants on blow-ups of ruled surfaces
Krishna Hanumanthu, Cyril J. Jacob, Suhas B. N. +1
In this note, we continue the study of Seshadri constants on blow-ups of Hirzebruch surfaces initiated in arXiv:2312.14555. Now we consider blow-ups of ruled surfaces more generall…
Effective cone of a Grassmann bundle over a curve defined over
Indranil Biswas, Shripad M. Garge, Krishna Hanumanthu
Let be an irreducible smooth projective curve defined over and a vector bundle on of rank at least two. For any $1\, \leq\, r\, <\, {\rm rank}(…
Seshadri constants on blow-ups of Hirzebruch surfaces
Krishna Hanumanthu, Cyril J. Jacob, Suhas B. N. +1
Let be integers and let denote the Hirzebruch surface with invariant …
Seshadri constants of curve configurations on surfaces
Krishna Hanumanthu, Praveen Kumar Roy, Aditya Subramaniam
Let be a complex nonsingular projective surface and let be an ample line bundle on . We study multi-point Seshadri constants of at singular points of certain arrange…
Seshadri constants on some flag bundles
Krishna Hanumanthu, Jagadish Pine
Let be a smooth complex projective curve and let be a vector bundle on which is not semistable. We consider a flag bundle parametrizing certain…