2022
DOI: 10.48550/arxiv.2204.09020
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A Sheaf-Theoretic Construction of Shape Space

Abstract: We present a sheaf-theoretic construction of shape space-the space of all shapes. We do this by describing a homotopy sheaf on the poset category of constructible sets, where each set is mapped to its Persistent Homology Transforms (PHT). Recent results that build on fundamental work of Schapira have shown that this transform is injective, thus making the PHT a good summary object for each shape. Our homotopy sheaf result allows us to "glue" PHTs of different shapes together to build up the PHT of a larger sha… Show more

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