Place: Sala Seminari Ovest, Dipartimento di Informatica. Branching processes describe the dynamics of a population of individuals which reproduce and die independently, according to some specific probability distributions. More precisely, we assume…
Categoria evento: Seminars
Alcune osservazioni sulla coomologia di DX e QX – Lorenzo Guerra (SNS Pisa)
Lo spazio dei lacci di uno spazio topologicoXdotato di un punto basex_0è lo spazioΩXdelle mappe[0,1]→Xil cui valore agli estremi èx_0. Uno spazio di lacci di ordinekè il risultato dikapplicazioni consecutive del funtoreΩ; uno di ordine infinito è…
On generalized derivative NLS – Felipe Linares (IMPA )
In this talk we will present recent results concerning the initial value problem (IVP) associated to generalized derivative Schrödinger equations. We show local well-posedness for small initial data in a suitable weighted Sobolev spaces. We use an…
Perimeter with densities: an energy for epitaxial growth – Marco Caroccia
In this talk I will introduce a free energy, first studied by Ratz and Voigt, defined as the integration over the reduced boundary of a crystal E of a suitable psi(u(x)) where psi is a convex function and u denotes the adatom density (the density of…
Perturbation theory for the spectral decomposition of matrices – Marcus Carlsson (Lund University)
Consider a Hermitian matrix and a small perturbation. We will consider how the eigenvalues and eigenvectors change with the perturbation. Typical theorems concerning this either consider a perturbation along a line or provide general estimates valid…
Blow-up, scattering and concentration of solutions for inhomogeneous NLS – Luccas Campos (Universidade Federal de Minas Gerais)
Venue Sala Seminari (Dip. Matematica). Abstract…
On the positive definite solution of the nonlinear matrix equation X^p=A+M^T(X#B)M – Jie Meng (Pusan National University)
The nonlinear matrix equation X^p = A + M^T (X # B)M is considered, where p ≥ 1 is a positive integer, M is an n × n nonsingular matrix, A is a positive semidefinite matrix and B is a positive definite matrix. We call C # D the geometric mean of…
On the 1/H flow via p-Laplace approximation under Ricci lower bounds – Luciano Mari (Scuola Normale Superiore di Pisa)
In this talk, we consider the existence problem for weak solutions of the Inverse Mean Curvature Flow on a complete manifold with only a Ricci lower bound. Solutions either issue from a point or from the boundary of a relatively compact open set. To…
Dirac-harmonic maps and “supersymmetric” nonlinear sigma models – Ruijun Wu (Scuola Normale Superiore di Pisa)
In these models we deal with coupled pairs consisting of a map between manifolds and a spinorial field along this map. Originated from supersymmetric sigma models and supermanifold theory, they are recently analysed using the tools in nonlinear…
Finite Energy Weak Solutions of the Navier-Stokes-Korteweg equations. – Stefano Spirito (Univ. L’Aquila)
In this talk I will present some results concerning the analysis of finite energy weak solutions of the Navier-Stokes-Korteweg equations, which model the dynamic of a viscous compressible fluid with diffuse interface. A general theory of global…