François Charles, Université Paris-Sud (Orsay)
Constructing curves on surfaces
Giovedì 06 Ottobre 2016, ore 16:30
Sala di rappresentanza, Dipartimento di Matematica, Università degli Studi, Via C. Saldini 50 | |
|
|
| |
Endre Szemerédi, Rutgers University
On the fundamental theorem of Freiman
Lunedì 03 Ottobre 2016, ore 16:03
Aula Chisini, via Saldini 50 | |
|
|
| |
Walter Craig, McMaster University
Vortex filament dynamics
Mercoledì 21 Settembre 2016, ore 16:30 precise
Sala di rappresentanza, Dipartimento di Matematica, Università degli Studi, Via C. Saldini 50 |
|
|
Abstract
|
 |
 |
The evolution of vortex filaments in three dimensions is an important problem in mathematical hydrodynamics. It appears in questions on solutions of the Euler equations as well as in the fine structure of vortex filamentation in a superfluid. It is also a setting in the analysis of partial differential equations with a compelling analogy to Hamiltonian dynamical systems. I will give an analysis of a system of model equations for the dynamics of near-parallel vortex filaments in a three dimensional fluid. These equations can be formulated as a Hamiltonian system of partial differential equations, and the talk will describe some aspects of a phase space analysis of solutions, including the construction of periodic and quasi-periodic orbits via a version of KAM theory for PDEs, and a topological principle to count multiplicity of solutions. This is ongoing joint work with L. Corsi (McMaster and Georgia Tech), C. Garcia (UNAM) and C.-R. Yang (McMaster and Shantou Univ.) |
|
|
| |
Elon Lindenstrauss, Hebrew University of Jerusalem
DIAGONAL FLOWS, JOININGS AND ARITHMETIC
Lunedì 11 Luglio 2016, ore 16:30
Aula Chisini, via Saldini 50 | |
|
|
| |
ALEX LUBOTSKY, Hebrew University and ETH-Zurich
COLLOQUIUM DIPARTIMENTO DI MATEMATICA E APPLICAZIONI, MILANO-BICOCCA con SEMINARIO MATEMATICO E FISICO DI MILANO: "High dimensional expanders: from Ramanujan graphs to Ramanujan complexes"
Giovedì 12 Maggio 2016, ore 15:30
Aula 3014, edificio U5 del Dipartimento di Matematica e Applicazioni, Universita' di Milano - Bicocca, Via R. Cozzi 55 | |
|
|
| |
Alessandro Giuliani, Università di Roma 3
Height fluctuations and universality relations in interacting dimer models
Mercoledì 04 Maggio 2016, ore 16:00
Sala di rappresentanza, Dipartimento di Matematica, Università degli Studi, Via C. Saldini 50 | |
|
|
| |
|
|
|
|
