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Merge Trees of Periodic Filtrations

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arxiv 2408.16575 v1 pith:BFW4NIBD submitted 2024-08-29 math.AT cs.CGmath.COmath.MG

classification math.ATcs.CGmath.COmath.MG
keywords underchangingcomplexcrystallinematerialsmergeperiodicaddition
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abstract

Motivated by applications to crystalline materials, we generalize the merge tree and the related barcode of a filtered complex to the periodic setting in Euclidean space. They are invariant under isometries, changing bases, and indeed changing lattices. In addition, we prove stability under perturbations and provide an algorithm that under mild geometric conditions typically satisfied by crystalline materials takes $\mathcal{O}({(n+m) \log n})$ time, in which $n$ and $m$ are the numbers of vertices and edges in the quotient complex, respectively.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Persistent Local Systems of Periodic Spaces

    math.AT 2025-05 conditional novelty 7.0 of 10

    Toroidal cycles of periodic cell complexes embed into canonical persistent local systems, enabling a proposed classification and polynomial-time computation for arbitrary periodicity.

  2. Identifying cobordisms using kernel persistence

    math.AT 2025-05 conditional novelty 6.0 of 10

    A new homological definition of open cobordisms, or tunnels, connecting two subcomplexes, with a matrix reduction algorithm that pairs their birth and death times in a filtration.

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