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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2012.12881 |
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| _version_ | 1866914686477271040 |
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| author | Bauer, Ulrich Schmahl, Maximilian |
| author_facet | Bauer, Ulrich Schmahl, Maximilian |
| contents | We introduce lifespan functors, which are endofunctors on the category of persistence modules that filter out intervals from barcodes according to their boundedness properties. They can be used to classify injective and projective objects in the category of barcodes and the category of pointwise finite-dimensional persistence modules. They also naturally appear in duality results for absolute and relative versions of persistent (co)homology, generalizing previous results in terms of barcodes. Due to their functoriality, we can apply these results to morphisms in persistent homology that are induced by morphisms between filtrations. This lays the groundwork for the efficient computation of barcodes for images, kernels, and cokernels of such morphisms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2012_12881 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Lifespan Functors and Natural Dualities in Persistent Homology Bauer, Ulrich Schmahl, Maximilian Algebraic Topology Computational Geometry 55N31, 55U10, 16G20, 18G05 We introduce lifespan functors, which are endofunctors on the category of persistence modules that filter out intervals from barcodes according to their boundedness properties. They can be used to classify injective and projective objects in the category of barcodes and the category of pointwise finite-dimensional persistence modules. They also naturally appear in duality results for absolute and relative versions of persistent (co)homology, generalizing previous results in terms of barcodes. Due to their functoriality, we can apply these results to morphisms in persistent homology that are induced by morphisms between filtrations. This lays the groundwork for the efficient computation of barcodes for images, kernels, and cokernels of such morphisms. |
| title | Lifespan Functors and Natural Dualities in Persistent Homology |
| topic | Algebraic Topology Computational Geometry 55N31, 55U10, 16G20, 18G05 |
| url | https://arxiv.org/abs/2012.12881 |