arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2008.01209math.PRcond-mat.dis-nncs.SIgr-qcphysics.soc-ph
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随机几何图的Ollivier-里奇曲率收敛性

Ollivier-Ricci curvature convergence in random geometric graphs

Pim van der Hoorn, William J. Cunningham, Gabor Lippner, Carlo Trugenberger, Dmitri Krioukov

摘要:

连续世界和离散世界之间的联系往往是难以捉摸的。一个例子是曲率。尽管存在许多图曲率的非等价定义,但没有一个已知的定义在任何限制下收敛于任何传统的黎曼流形的曲率定义。在这里,我们表明,奥利维尔曲率的随机几何图在任何黎曼流形收敛于连续极限的里奇曲率的基础流形,但只有当奥利维尔图曲率的定义适当推广到适用于介观图的邻域。这个结果建立了适用于网络的曲率定义和光滑空间的曲率的传统定义之间的第一个严格的联系。

英文摘要:

Connections between continuous and discrete worlds tend to be elusive. One example is curvature. Even though there exist numerous nonequivalent definitions of graph curvature, none is known to converge in any limit to any traditional definition of curvature of a Riemannian manifold. Here we show that Ollivier curvature of random geometric graphs in any Riemannian manifold converges in the continuum limit to Ricci curvature of the underlying manifold, but only if the definition of Ollivier graph curvature is properly generalized to apply to mesoscopic graph neighborhoods. This result establishes the first rigorous link between a definition of curvature applicable to networks and a traditional definition of curvature of smooth spaces.

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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