Groupoid G-spans and matrices over group rings
Fuente:
arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| _version_ | 1866914413045350400 |
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| author | Kock, Joachim Møller, Jesper M. |
| author_facet | Kock, Joachim Møller, Jesper M. |
| contents | When G is a finite abelian group, we define G-spans of groupoids and their associated matrices with entries in the group ring QG and show that composition of spans corresponds to multiplication of matrices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_20787 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Groupoid G-spans and matrices over group rings Kock, Joachim Møller, Jesper M. Category Theory 18B10, 20L05 When G is a finite abelian group, we define G-spans of groupoids and their associated matrices with entries in the group ring QG and show that composition of spans corresponds to multiplication of matrices. |
| title | Groupoid G-spans and matrices over group rings |
| topic | Category Theory 18B10, 20L05 |
| url | https://arxiv.org/abs/2603.20787 |