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- W4287022796 abstract "The relative interlevel set cohomology (RISC) is an invariant of real-valued continuous functions closely related to the Mayer--Vietoris pyramid introduced by Carlsson, de Silva, and Morozov. As such, the relative interlevel set cohomology is a parametrization of the cohomology vector spaces of all open interlevel sets relative complements of closed interlevel sets. We provide a structure theorem, which applies to the RISC of real-valued continuous functions whose open interlevel sets have finite-dimensional cohomology in each degree. Moreover, we show this tameness assumption is in some sense equivalent to $q$-tameness as introduced by Chazal, de Silva, Glisse, and Oudot. Furthermore, we provide the notion of an interleaving for RISC and we show that it is stable in the sense that any space with two functions that are $delta$-close induces a $delta$-interleaving of the corresponding relative interlevel set cohomologies. Finally, we provide an elementary form of quantitative homotopy invariance for RISC." @default.
- W4287022796 created "2022-07-25" @default.
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- W4287022796 date "2021-08-20" @default.
- W4287022796 modified "2023-09-26" @default.
- W4287022796 title "Structure and Interleavings of Relative Interlevel Set Cohomology" @default.
- W4287022796 doi "https://doi.org/10.48550/arxiv.2108.09298" @default.
- W4287022796 hasPublicationYear "2021" @default.
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