Tight quasi-universality of Reeb graph distances

Ulrich Bauer; Håvard Bakke Bjerkevik; Benedikt Fluhr

doi:10.4230/lipics.socg.2022.14

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arXiv · 2112.00720

Tight quasi-universality of Reeb graph distances

Ulrich Bauer·Håvard Bakke Bjerkevik·Benedikt Fluhr

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Abstract

We establish tight bi-Lipschitz bounds certifying quasi-universality (universality up to a constant factor) for various distances between Reeb graphs: the interleaving distance, the functional distortion distance, and the functional contortion distance. The definition of the latter distance is a novel contribution, and for the special case of contour trees we also prove strict universality of this distance. Furthermore, we prove that for the special case of merge trees the functional contortion distance coincides with the interleaving distance, yielding universality of all four distances in this case.

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Ulrich Bauer, Håvard Bakke Bjerkevik, Benedikt Fluhr. 2021-12-01. Tight quasi-universality of Reeb graph distances. https://doi.org/10.4230/lipics.socg.2022.14

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