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    "text": "Also this article by Ghys and Ranicki contains some nice history and applications of signature theory: arxiv.org/abs/1512.09258",
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        "title": "Signatures in algebra, topology and dynamics",
        "description": "We survey the 19th century development of the signature of a quadratic form, and the applications in the 20th and 21st century to the topology of manifolds and dynamical systems. Version 2 is an expan..."
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    "createdAt": "2025-05-04T18:00:26.718Z"
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