On finite generation in magnitude (co)homology, and its torsion
Fuente:
arXiv
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2023
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866912108561563648 |
|---|---|
| author | Caputi, Luigi Collari, Carlo |
| author_facet | Caputi, Luigi Collari, Carlo |
| contents | The aim of this paper is to apply the framework, which was developed by Sam and Snowden, to study structural properties of graph homologies, in the spirit of Ramos, Miyata and Proudfoot. Our main results concern the magnitude homology of graphs introduced by Hepworth and Willerton. More precisely, for graphs of bounded genus, we prove that magnitude cohomology, in each homological degree, has rank which grows at most polynomially in the number of vertices, and that its torsion is bounded. As a consequence, we obtain analogous results for path homology of (undirected) graphs. We complement the work with a proof that the category of planar graphs of bounded genus and marked edges, with contractions, is quasi-Gröbner. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2302_06525 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | On finite generation in magnitude (co)homology, and its torsion Caputi, Luigi Collari, Carlo Algebraic Topology Combinatorics Category Theory Representation Theory 18G85, 55F35 The aim of this paper is to apply the framework, which was developed by Sam and Snowden, to study structural properties of graph homologies, in the spirit of Ramos, Miyata and Proudfoot. Our main results concern the magnitude homology of graphs introduced by Hepworth and Willerton. More precisely, for graphs of bounded genus, we prove that magnitude cohomology, in each homological degree, has rank which grows at most polynomially in the number of vertices, and that its torsion is bounded. As a consequence, we obtain analogous results for path homology of (undirected) graphs. We complement the work with a proof that the category of planar graphs of bounded genus and marked edges, with contractions, is quasi-Gröbner. |
| title | On finite generation in magnitude (co)homology, and its torsion |
| topic | Algebraic Topology Combinatorics Category Theory Representation Theory 18G85, 55F35 |
| url | https://arxiv.org/abs/2302.06525 |