English

Transversely holomorphic branched Cartan geometry

Differential Geometry 2018-09-26 v1 Complex Variables

Abstract

Earlier we introduced and studied the concept of holomorphic {\it branched Cartan geometry}. We define here a foliated version of this notion; this is done in terms of Atiyah bundle. We show that any complex compact manifold of algebraic dimension dd admits, away from a closed analytic subset of positive codimension, a nonsingular holomorphic foliation of complex codimension dd endowed with a transversely flat branched complex projective geometry (equivalently, a CPd{\mathbb C}P^d-geometry). We also prove that transversely branched holomorphic Cartan geometries on compact complex projective rationally connected varieties and on compact simply connected Calabi-Yau manifolds are always flat (consequently, they are defined by holomorphic maps into homogeneous spaces).

Keywords

Cite

@article{arxiv.1803.06472,
  title  = {Transversely holomorphic branched Cartan geometry},
  author = {Indranil Biswas and Sorin Dumitrescu},
  journal= {arXiv preprint arXiv:1803.06472},
  year   = {2018}
}
R2 v1 2026-06-23T00:56:09.966Z