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arXiv 1607.07069math.COmath.ATmath.PR
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随机单纯复形

Random simplicial complexes

Matthew Kahle

摘要:

随机形状在许多情况下自然出现。这种物体的拓扑和几何结构本身就很有趣,也很有应用价值。例如,在物理学中,这样的物体在量子引力、材料科学和其他环境中自然产生。随机拓扑也可以被认为是用于拓扑数据分析的原假设。在本章中,我们概述了随机拓扑的组合方面。我们主要研究随机单纯复形的拓扑和几何性质。我们将在第23.1节中介绍一些基本模型。我们在23.2节中回顾了随机复形的高维展开子性质。我们在23.3节讨论阈值行为和相变,在23.4节讨论贝蒂数和持久同调。

英文摘要:

Random shapes arise naturally in many contexts. The topological and geometric structure of such objects is interesting for its own sake, and also for applications. In physics, for example, such objects arise naturally in quantum gravity, in material science, and in other settings. Stochastic topology may also be considered as a null hypothesis for topological data analysis. In this chapter we overview combinatorial aspects of stochastic topology. We focus on the topological and geometric properties of random simplicial complexes. We introduce a few of the fundamental models in Section 23.1. We review high-dimensional expander-like properties of random complexes in Section 23.2. We discuss threshold behavior and phase transitions in Section 23.3, and Betti numbers and persistent homology in Section 23.4.

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