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arXiv 2209.09558math.DG
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从对偶连接到几乎切触结构

From Dual Connections to Almost Contact Structures

E. Gnandi, S. Puechmorel

摘要:

光滑黎曼流形$M$上的一个对偶结构是一个三元组$(M,g,\nabla)$,其中$g$是黎曼度量,$\nabla$是仿射联络,通常假设是无挠的。从$g$和$\nabla$出发,可以定义对偶连接$\nabla^*$,三元组$(M, \nabla,\nabla^*)$称为统计流形,是信息几何中的基本对象。在本文中,我们给出了基于这一概念的流形上的几乎切触结构和一些相关结构的条件:几乎切触度量,接触,接触度量,共辛,和coKähler在三维情况下。

英文摘要:

A dualistic structure on a smooth Riemaniann manifold $M$ is a triple $(M,g,\nabla)$ with $g$ a Riemaniann metric and $\nabla$ an affine connection, generally assumed to be torsionless. From $g$ and $\nabla$, the dual connection $\nabla^*$ can be defined and the triple $(M, \nabla,\nabla^*)$ is called a statistical manifold, a basic object in information geometry. In this work, we give conditions based on this notion for a manifold to admit an almost contact structure and some related structures: almost contact metric,contact, contact metric, cosymplectic, and coKähler in the three-dimensional case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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