Cartan-Ambrose-Hicks theorems and dual geodesic symmetries on statistical manifolds
Abstract
We establish Cartan-Ambrose-Hicks (CAH) theorems for statistical manifolds and characterize statistical symmetric spaces by dual geodesic symmetries. These theorems determine statistical structures up to local statisticmorphism by comparing the curvature of an alpha-connection and the skewness tensor using radial geodesics and parallel displacement of that connection. The Levi-Civita formulation characterizes local statisticmorphisms by comparing the radial Jacobi operators of Riemannian curvature and the skewness tensor using Levi-Civita parallel displacement. The same characterization holds with statistical curvature in place of Riemannian curvature. For Hessian manifolds, comparison of the skewness tensor alone is necessary and sufficient. For connected statistical manifolds, we prove the equivalence between the homogeneous definition of statistical symmetric spaces and the existence of global dual geodesic symmetries at every point. The CAH theorems give the necessary and sufficient conditions for maps constructed from exponential maps of dual connections to be local dual geodesic symmetries, preserving the metric and interchanging the dual connections. Such local symmetries exist at every point if and only if the Riemannian curvature and skewness tensors are Levi-Civita parallel. For Hessian manifolds, this condition is equivalent to the equality of the Hessian and dual Hessian curvature tensors.
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BibTeX
@misc{satoh2026cartanambrosehicks,
title = {{Cartan-Ambrose-Hicks theorems and dual geodesic symmetries on statistical manifolds}},
author = {Naoto Satoh},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36803},
eprint = {2610.36803},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36803},
}
RIS
TY - UNPB
TI - Cartan-Ambrose-Hicks theorems and dual geodesic symmetries on statistical manifolds
AU - Naoto Satoh
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.36803
UR - https://arxiv.org/abs/2610.36803
AB - We establish Cartan-Ambrose-Hicks (CAH) theorems for statistical manifolds and characterize statistical symmetric spaces by dual geodesic symmetries. These theorems determine statistical structures up to local statisticmorphism by comparing the curvature of an alpha-connection and the skewness tensor using radial geodesics and parallel displacement of that connection. The Levi-Civita formulation characterizes local statisticmorphisms by comparing the radial Jacobi operators of Riemannian curvature and the skewness tensor using Levi-Civita parallel displacement. The same characterization holds with statistical curvature in place of Riemannian curvature. For Hessian manifolds, comparison of the skewness tensor alone is necessary and sufficient. For connected statistical manifolds, we prove the equivalence between the homogeneous definition of statistical symmetric spaces and the existence of global dual geodesic symmetries at every point. The CAH theorems give the necessary and sufficient conditions for maps constructed from exponential maps of dual connections to be local dual geodesic symmetries, preserving the metric and interchanging the dual connections. Such local symmetries exist at every point if and only if the Riemannian curvature and skewness tensors are Levi-Civita parallel. For Hessian manifolds, this condition is equivalent to the equality of the Hessian and dual Hessian curvature tensors.
ER -