Notes concerning Codazzi pairs on almost anti-Hermitian manifolds
Abstract
Let $\nabla $ be a linear connection on an $2n$-dimensional almost anti-Hermitian manifold $M$\ equipped with an almost complex structure $J$, a pseudo-Riemannian metric $g$ and the twin metric $G=g\circ J$. In this paper, we first introduce three types of conjugate connections of linear connections relative to $g$, $G$ and $J$. We obtain a simple relation among curvature tensors of these conjugate connections. To clarify relations of these conjugate connections, we prove a result stating that conjugations along with an identity operation together act as a Klein group. Secondly, we give some results exhibiting occurrences of Codazzi pairs which generalize parallelism relative to $\nabla $. Under the assumption that $(\nabla ,J)$ being a Codazzi pair, \ we derive a necessary and sufficient condition the almost anti-Hermitian manifold $(M,J,g,G)$ is an anti-Kähler relative to a torsion-free linear connection $\nabla $. Finally, we investigate statistical structures on $M$ under $\nabla $ ($\nabla $ is a $J-$invariant torsion-free connection).
- Publication:
-
arXiv e-prints
- Pub Date:
- November 2019
- DOI:
- 10.48550/arXiv.1911.06140
- arXiv:
- arXiv:1911.06140
- Bibcode:
- 2019arXiv191106140G
- Keywords:
-
- Mathematics - Differential Geometry;
- Primary 53C05;
- 53C55;
- Secondary 62B10
- E-Print:
- 11 pages