Abstract
Multidimensional persistence modules do not admit a concise representation analogous to that provided by persistence diagrams for real-valued functions. However, there is no obstruction for multidimensional persistent Betti numbers to admit one. Therefore, it is reasonable to look for a generalization of persistence diagrams concerning those properties that are related only to persistent Betti numbers. In this paper, the persistence space of a vector-valued continuous function is introduced to generalize the concept of persistence diagram in this sense. The main result is its stability under function perturbations: Any change in vector-valued functions implies a not greater change in the Hausdorff distance between their persistence spaces.
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Acknowledgments
Work carried out within the activity of ARCES “E. De Castro”, University of Bologna, under the auspices of INdAM-GNSAGA. Andrea Cerri was partially supported by the CNR research activity ICT.P10.009.
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Communicated by Gunnar Carlsson.
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Cerri, A., Landi, C. Hausdorff Stability of Persistence Spaces. Found Comput Math 16, 343–367 (2016). https://doi.org/10.1007/s10208-015-9244-1
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DOI: https://doi.org/10.1007/s10208-015-9244-1