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arXiv 1907.09759math.ATcs.CG
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水平集持久性与层理论

Level-sets persistence and sheaf theory

Nicolas Berkouk, Grégory Ginot, Steve Oudot

摘要:

在本文中,我们提供了一个明确的水平集持久性和导出层理论之间的连接。特别地,我们构造了一个从2-参数持久化模到$\mathbb{R}$上的层的函子,以及另一个方向的函子。我们还观察到,2-参数持久模块所产生的水平集的莫尔斯功能进行额外的结构,我们称之为迈耶-Vietoris系统。我们证明分类,条码分解,和稳定性定理,这些迈耶-Vietoris系统,我们表明,上述函子建立一个伪等距等价的类别之间的推导可构造层卷积或(推导)瓶颈距离和交错距离严格逐点有限维迈耶-Vietoris系统。最后,我们的结果提供了一个函子之间的水平集持久性和连续实值函数的衍生前推等价。

英文摘要:

In this paper we provide an explicit connection between level-sets persistence and derived sheaf theory over the real line. In particular we construct a functor from 2-parameter persistence modules to sheaves over $\mathbb{R}$, as well as a functor in the other direction. We also observe that the 2-parameter persistence modules arising from the level sets of Morse functions carry extra structure that we call a Mayer-Vietoris system. We prove classification, barcode decomposition, and stability theorems for these Mayer-Vietoris systems, and we show that the aforementioned functors establish a pseudo-isometric equivalence of categories between derived constructible sheaves with the convolution or (derived) bottleneck distance and the interleaving distance of strictly pointwise finite-dimensional Mayer-Vietoris systems. Ultimately, our results provide a functorial equivalence between level-sets persistence and derived pushforward for continuous real-valued functions.

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