Chewing gums, snakes and candle cakes
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866910213669388288 |
|---|---|
| author | Facciotti, Benedetta Mazzocco, Marta Nikolaev, Nikita |
| author_facet | Facciotti, Benedetta Mazzocco, Marta Nikolaev, Nikita |
| contents | The aim of these lecture notes, based on lectures given by the second author at the CIME school in Cetraro, is to illustrate a range of ideas surrounding higher Teichmuller spaces of Riemann surfaces with marked boundaries through explicit and computationally tractable examples. After reviewing the classical Teichmuller space of hyperbolic Riemann surfaces with boundary and its combinatorial description in terms of Thurston shear coordinates on a fat-graph, we explain how the bordered cusped Teichmuller space arises as a confluent limit when two boundary components in the Riemann surface collide via the so-called chewing-gum move giving rise to a candle cake. We then revisit these constructions from the Fock-Goncharov perspective, explaining snake calculus for transport matrices in PSL_n(R) and explain how the chewing gum move is the inverse of amalgamation. Rather than focusing on formal proofs, our goal is to illustrate the underlying theorems and constructions in a concrete and intuitive way. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_12572 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Chewing gums, snakes and candle cakes Facciotti, Benedetta Mazzocco, Marta Nikolaev, Nikita Geometric Topology Mathematical Physics 30F60, 32G15, 57K20, 14H10, 14M35 The aim of these lecture notes, based on lectures given by the second author at the CIME school in Cetraro, is to illustrate a range of ideas surrounding higher Teichmuller spaces of Riemann surfaces with marked boundaries through explicit and computationally tractable examples. After reviewing the classical Teichmuller space of hyperbolic Riemann surfaces with boundary and its combinatorial description in terms of Thurston shear coordinates on a fat-graph, we explain how the bordered cusped Teichmuller space arises as a confluent limit when two boundary components in the Riemann surface collide via the so-called chewing-gum move giving rise to a candle cake. We then revisit these constructions from the Fock-Goncharov perspective, explaining snake calculus for transport matrices in PSL_n(R) and explain how the chewing gum move is the inverse of amalgamation. Rather than focusing on formal proofs, our goal is to illustrate the underlying theorems and constructions in a concrete and intuitive way. |
| title | Chewing gums, snakes and candle cakes |
| topic | Geometric Topology Mathematical Physics 30F60, 32G15, 57K20, 14H10, 14M35 |
| url | https://arxiv.org/abs/2605.12572 |