Group-theoretic Johnson classes and a non-hyperelliptic curve with torsion Ceresa class
Let l be a prime and G a pro-l group with torsion-free abelianization. We produce group-theoretic analogues of the Johnson/Morita cocycle for G -- in the case of surface groups, these cocycles appear to refine existing constructions when l=2. We apply this to the pro-l etale fundamental groups of sm...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Association Epiga
2023-03-01
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| Series: | Épijournal de Géométrie Algébrique |
| Subjects: | |
| Online Access: | https://epiga.episciences.org/6849/pdf |