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An Abel–Jacobi theorem for metrized complexes of Riemann surfaces

  • Maximilian C. E. Hofmann and Martin Ulirsch EMAIL logo
Published/Copyright: May 15, 2025
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Abstract

Motivated by the recent surge of interest in the geometry of hybrid spaces, we prove an Abel–Jacobi theorem for a metrized complex of Riemann surfaces, generalizing both the classical Abel–Jacobi theorem and its tropical analogue.

MSC 2010: 14T05

Funding statement: This project has received funding from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) TRR 326 Geometry and Arithmetic of Uniformized Structures, project number 444845124, from the DFG Sachbeihilfe FromRiemann surfaces to tropical curves (and back again), project number 456557832, as well as the DFG Sachbeihilfe Rethinking tropical linear algebra: Buildings, bimatroids, and applications, project number 539867663, within the SPP 2458 Combinatorial Synergies.

Acknowledgements

The authors would like to thank Andreas Gross for helpful discussions en route to this article. Remarks from the anonymous referee have significantly improved the structure of our main argument and, for example, also led to a simpler proof of Proposition 3.1. We thank the referee for generously sharing their ideas.

  1. Communicated by: R. Cavalieri

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Received: 2024-08-19
Revised: 2025-01-12
Published Online: 2025-05-15
Published in Print: 2025-04-28

© 2025 Walter de Gruyter GmbH, Berlin/Boston

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