Quantales, persistence, and magnitude homology
Abstract
We construct a nerve functor parametrized by a choice of quantale, exhibiting both the Vietoris-Rips complex and the magnitude nerve as instances of this nerve for different choices of monoidal structure on . Furthermore, the difference between how persistent homology processes the Vietoris-Rips complex and how magnitude homology processes the magnitude nerve is cast as a choice of whether or not to "localize" the corresponding nerves along in a precise sense. Lastly, we mention some application-oriented observations naturally suggested by the perspective mentioned above.
Keywords
Cite
@article{arxiv.1910.02905,
title = {Quantales, persistence, and magnitude homology},
author = {Simon Cho},
journal= {arXiv preprint arXiv:1910.02905},
year = {2020}
}
Comments
24 pages. Weakened the statement of Lemma 15 to work around a gap in the proof of the original statement. All other mathematical content unchanged (including Theorem 25', which only relied on the weakened version to begin with). Some changes to writing style