| Orateur(s) | Michael CUNTZ - Kaiserslautern,
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| Titre | Weyl groupoids of rank two and continued fractions (joint work with Istvan Heckenberger) |
| Date | 05/02/2009 |
| Horaire | 10:30 à 11:30 |
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| Diffusion | |
| Résume | A relationship between continued fractions and Weyl groupoids of Cartan schemes of rank two is found. This allows to decide easily if a given Cartan scheme of rank two admits a finite root system. We obtain obstructions and sharp bounds for the entries of the Cartan matrices. |
| Salle | 11 rue Pierre et Marie Curie - 75005 Paris |
| Adresse | |
