| Equipe(s) : | doctorants, |
| Responsables : | Salim Alloun, Pedro Alves, Baptiste Dugué, Brian Flanagan, Ivory Fronteau, Kostyantyn Krutoy |
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| Description | Le séminaire des doctorant.e.s est l'occasion pour les doctorant.e.s de présenter des résultats et des problématiques dignes d'intérêt devant un public de non-spécialistes. L'ambiance y est informelle ; poser des questions naïves est encouragé, et les questions moins naïves sont bienvenues dans la mesure où elles n'entravent pas le bon déroulement de l'exposé. Chaque jeudi à 18h, en alternance entre Jussieu et Sophie Germain. The PhD seminar is an opportnuity for PhD students to present results and topics worthy of interest in front of a non-specialist audience. The mood is informal ; asking naive questions is highly encouraged and less naive questions are also welcomed, as long as they don't intefere with the smoothness of the talk. Every Thursday at 6pm, alternating between Jussieu and Sophie Germain. |
| Orateur(s) | Amandine Escalier - , |
| Titre | Local-to-Global rigidity of quasi-buildings |
| Date | 25/11/2020 |
| Horaire | 16:00 à 17:00 |
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| Diffusion | https://bbb-front.math.univ-paris-diderot.fr/recherche/rom-jih-e33-pkv |
| Résume | Behind this juxtaposition of almost usual words and ostentatious capital letters, hides the name of the geometric group theory result that will be the object of this talk. We will recall the necessary basis of graph theory, define LG-rigidity, observe Bruhat-Tits buildings in their natural environment and study prints of vertices. We will see how writing noums with capital letters can transform them into Mathematical Concepts, present the rigidity theorem on quasi-buildings and —if time permits— give the principal ideas of the proof. Although the responsibility of this abstract falls only on the speaker, the mathematical work has been done under the supervision of Romain Tessera. |
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