On the category of Hopf braces
Fuente:
arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866908572484370432 |
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| author | Agore, Ana Chirvasitu, Alexandru |
| author_facet | Agore, Ana Chirvasitu, Alexandru |
| contents | Hopf braces are the quantum analogues of skew braces and, as such, their cocommutative counterparts provide solutions to the quantum Yang-Baxter equation. We investigate various properties of categories related to Hopf braces. In particular, we prove that the category of Hopf braces is accessible while the category of cocommutative Hopf braces is even locally presentable. We also show that functors forgetting multiple antipodes and/or multiplications down to coalgebras are monadic. Colimits in the category of cocommutative Hopf braces are described explicitly and a free cocommutative Hopf brace on an arbitrary cocommutative Hopf algebra is constructed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_06280 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the category of Hopf braces Agore, Ana Chirvasitu, Alexandru Quantum Algebra Category Theory Rings and Algebras 16T05, 16T25, 18A35, 18A40, 18E08, 18E13, 16S10, 08A62 Hopf braces are the quantum analogues of skew braces and, as such, their cocommutative counterparts provide solutions to the quantum Yang-Baxter equation. We investigate various properties of categories related to Hopf braces. In particular, we prove that the category of Hopf braces is accessible while the category of cocommutative Hopf braces is even locally presentable. We also show that functors forgetting multiple antipodes and/or multiplications down to coalgebras are monadic. Colimits in the category of cocommutative Hopf braces are described explicitly and a free cocommutative Hopf brace on an arbitrary cocommutative Hopf algebra is constructed. |
| title | On the category of Hopf braces |
| topic | Quantum Algebra Category Theory Rings and Algebras 16T05, 16T25, 18A35, 18A40, 18E08, 18E13, 16S10, 08A62 |
| url | https://arxiv.org/abs/2503.06280 |