Friday February 3rd, 2023 | |
| Time: | 2:30 PM |
| Title: | On KAM-rigidity of affine $Z^k$-actions on the torus. |
| Speaker: | Bassam Fayad, University of Maryland |
| Location: | Math P-131 |
| Abstract: | |
| In which ways can one perturb the action on the torus of a commuting pair of affine automorphisms? It is a general knowledge today that higher rank actions tend to be locally rigid while $Z$ actions are usually not locally rigid. The aim of the talk is to address the general classification of $Z^k$-actions on the torus by affine automorphisms in terms of local rigidity. The talk will be based on a joint work with D. Damjanovic and M. Saprykina. | |