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arXiv 2102.11155math.OCmath.DG
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Hadamard流形上的Fenchel对偶与一个分离定理

Fenchel Duality and a Separation Theorem on Hadamard Manifolds

Maurício Silva Louzeiro, Ronny Bergmann, Roland Herzog

摘要:

本文在切丛的基础上,给出了Hadamard流形上Fenchel共轭和Fenchel双共轭的定义.我们的定义克服了以往定义中共轭依赖于流形上某一点的选择的不便。另一方面,这个新定义仍然具有已知在欧几里得情况下成立的性质。它甚至产生了一个更广泛的解释芬切尔共轭在欧几里德的情况本身。最突出的是,我们的Fenchel共轭的定义提供了一个Fenchel-Moreau定理测地凸,适当的,低连续函数。此外,这个框架还允许我们发展Hadamard流形上凸集的分离理论,并得到了一个严格的分离定理。

英文摘要:

In this paper, we introduce a definition of Fenchel conjugate and Fenchel biconjugate on Hadamard manifolds based on the tangent bundle. Our definition overcomes the inconvenience that the conjugate depends on the choice of a certain point on the manifold, as previous definitions required. On the other hand, this new definition still possesses properties known to hold in the Euclidean case. It even yields a broader interpretation of the Fenchel conjugate in the Euclidean case itself. Most prominently, our definition of the Fenchel conjugate provides a Fenchel-Moreau Theorem for geodesically convex, proper, lower semicontinuous functions. In addition, this framework allows us to develop a theory of separation of convex sets on Hadamard manifolds, and a strict separation theorem is obtained.

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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