A characterization of uniruled compact K\"ahler manifolds

Abstract

We adapt Bost's algebraicity characterization to the situation of a germ in a compact K\"ahler manifold. As a consequence, we extend the algebraic integrability criteria of Campana-P\u{a}un and of Druel to foliations on compact K\"ahler manifolds. As an application, we prove that a compact K\"ahler manifold is uniruled if and only if its canonical line bundle is not pseudoeffective.