6533b862fe1ef96bd12c6ed3

RESEARCH PRODUCT

On a question of Mehta and Pauly

Holger BrennerAxel Stäbler

subject

Mathematics - Algebraic GeometryPure mathematicsMathematics::Algebraic GeometryFiltration (mathematics)FOS: MathematicsVector bundleGeneral MedicineAlgebraic Geometry (math.AG)Mathematics14H60

description

In this short note we provide explicit examples in characteristic $p$ on certain smooth projective curves where for a given semistable vector bundle $\mathcal{E}$ the length of the Harder-Narasimhan filtration of $F^\ast \mathcal{E}$ is longer than $p$. This answers a question of Mehta and Pauly raised in arXiv:math/0607565.

https://dx.doi.org/10.48550/arxiv.1310.4704