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Mercredi 3 Juin
| Heure: |
15:00 - 16:00 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Modélisation et Calcul Scientifique - Construction of transparent boundary conditions for wave propagation in fractal trees. - |
| Description: |
Maryna Kachanovska
The principal difficulty for the numerical resolution of the problem is the 'infiniteness' of the geometry. To deal with this issue, we present transparent boundary conditions, used to truncate the computational domain to a finite subtree. The construction of such transparent conditions relies on the approximation of the Dirichlet-to-Neumann (DtN) operator, whose symbol is a meromorphic function that satisfies a certain non-linear functional equation. We present one approach to approximate the DtN in the time domain, inspired by the Engquist-Majda ABCs (cf. [Engquist, Majda 1977]). This approach consists in approximating the DtN by local operators, obtained from the truncation of the meromorphic series which represents the symbol of the DtN. The respective error analysis relies on the Weyl estimates for the eigenvalues of the weighted Laplacian on the fractal tree and on the estimates on the respective eigenfunctions. This is a joint work with Patrick Joly (INRIA, France) and Adrien Semin (TU Darmstadt, Germany).  |
Jeudi 4 Juin
| Heure: |
17:00 - 18:00 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Géométrie Arithmétique et Motivique - The use of the p-adic Langlands correspondance in some Euler system construction - |
| Description: |
Eric Urban |
Vendredi 5 Juin
| Heure: |
17:00 - 18:00 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Géométrie Arithmétique et Motivique - Mod p Bernstein centres of p-adic groups - |
| Description: |
Andrea Dotto
to be closely related to the Emerton--Gee stack for 2-dimensional representations |
Mercredi 10 Juin
| Heure: |
15:00 - 16:00 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Modélisation et Calcul Scientifique - Eléments finis multi-échelles et applications en mécanique des fluides. - |
| Description: |
Pascal Omnes |
Vendredi 12 Juin
| Heure: |
10:30 - 11:30 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Géométrie Arithmétique et Motivique - Mod p points on Shimura varieties of parahoric level - |
| Description: |
Pol Van Hoften |
Vendredi 19 Juin
| Heure: |
10:30 - 11:30 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Géométrie Arithmétique et Motivique - p-adic L-functions and the spectral halo - |
| Description: |
Ashwin Iyengar |
Vendredi 26 Juin
| Heure: |
10:30 - 11:30 |
| Lieu: |
Salle B405, bâtiment B, LAGA, Institut Galilée, Université Paris 13 |
| Résumé: |
Géométrie Arithmétique et Motivique - Transfert de thêta mod p - |
| Description: |
Xiaoyu Zhang |
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