When applying Interior Point (IP) algorithm to the solution of linear or convex separable optimization problems with strong graph structure, like the Min Cost Flow (MCF) problem, one has to repeatedly solve linear systems with strong graph…
Eventi
Counting self-intersecting multi curves – Viveca Erlandsson (Aalto University)
I will describe some joint work in progress with Juan Souto studying the asymptotic growth on the number $n_k^S(L)$ of multicurves with $k$ self-intersections of length at most $L$ on a hyperbolic surface $S$. More concretely, I will show that for…
On the stability of KAM tori – Bassam Fayad ( CNRS IMJ-PRG e UMI Laboratorio Fibonacci)
Venue Sala Conferenze (Puteano, Centro De Giorgi). Abstract…
Hamiltonian systems of Schroedinger equations with supercritical exponential growth – Daniele Cassani (Università degli Studi dell’Insubria)
We present existence of solitary waves solutions for elliptic systems in dimension two with nonlinearities which exhibit supercritical growth with respect to the critical growth prescribed by the Pohozaev-Trudinger-Moser inequality. We obtain…
Piecewise contractions defined by iterated function systems – Arnaldo Nogueira (Universita’ di Aix Marseille )
We are interested in the asymptotical behavior of piecewise contractions of the interval (PCs). A map $f:[0,1)\to [0,1)$ is an {\it $n$ interval PC} if there exists a partition of the interval $[0,1)$ into subintervals $J_1,\ldots,J_n$ such that…
Comparing the real, complex, and Zilber exponentials from a logical point of view – Angus Macintyre (Queen Mary University of London)
Abstract TBA…
Metric theory for a new family of continued fraction expansions – Niels Langveld (TU Delft)
The family of flipped expansions and the family of 2-expansions is combined to make a new family of continued fraction expansions we will call flipped 2-expansions. It is shown that there is only one flipped continued fraction expansion map that…
On Kurzweil’s 0-1 Law in Inhomogeneous Diophantine Approximation – Dong Han Kim (Dongguk University)
We give a sufficient and necessary condition such that for almost all $s\in{\mathbb R}$ $$ \ \theta-s\<\psi(n)\qquad\text{for infinitely many}\ n\in{\mathbb N}, $$ where $\theta$ is fixed and $\psi(n)$ is a positive, non-increasing sequence. This…
Misura di Hausdorff di alcune condizioni diofantee e superfici di traslazione. – Luca Marchese (Paris 13)
We consider two dynamical problems for translation surfaces, both related to diophantine approximations: one is the study of the asymptotic amplitude of excursions at infinity of a Teichmuller geodesic in parameter space, the other is the study of…
Decomposition of quantum representations into irreducible factors – Julien Korinman (Université de Grenoble)
I will define two families of representations of the mapping class group of surfaces, namely the Weil and Reshetikhin-Turaev representations. Then I will state some results concernings the (in)finiteness of their image and their decomposition into…