MARGAUx PhD Days 2023

Europe/Paris
Laboratoire de Mathématiques et Applications (Poitiers)

Laboratoire de Mathématiques et Applications

Poitiers

    • 11:00 AM 11:45 AM
      Accueil / Welcome 45m
    • 11:45 AM 12:15 PM
      Mot d'accueil / Welcome talk 30m
    • 12:15 PM 2:00 PM
      Pause repas / Lunch break 1h 45m
    • 2:00 PM 2:15 PM
      Florent Noisette-Low regularity solution of the Euler equation with entering flux 15m
    • 2:15 PM 2:35 PM
      Bianca Gouthier - Infinitesimal birational actions on curves 20m
    • 2:35 PM 2:50 PM
      Ibtissem Lanabi - Behavior of the Compressible Euler equations in the low Mach number limit 15m
    • 2:50 PM 3:10 PM
      Oscar Cosserat-Géométrie différentielle et mécanique théorique 20m

      Étude de systèmes dynamiques venant de la mécanique théorique et modélisés par des outils de la géométrie différentielle, utilisation de ce formalisme pour découvrir des schémas numériques préservant leurs symétries. Après un bref rappel historique et en fonction du temps qui m'est alloué, j'expliquerai tout ou une partie des théories en jeu et développerai des exemples illustratifs.

    • 3:30 PM 4:00 PM
      Pause / Break 30m
    • 4:00 PM 4:20 PM
      Théo Untrau - Equirépartition de certaines sommes d'exponentielles courtes 20m

      Dans cet exposé, je commencerai par présenter quelques applications des sommes d'exponentielles à des problèmes concrets de théorie des nombres. Ces applications servent de motivation pour une étude plus fine des propriétés de ces sommes. Je présenterai quelques résultats d'équirépartition de sommes d'exponentielles obtenus pendant ma thèse, et je montrerai des images qui illustrent ce type de phénomène.

    • 4:20 PM 4:30 PM
      Florian Robert - Impact de l'organisation interne des tissus hépatiques tumoraux sur l'efficacité de la thermothérapie par radiofréquence ou micro-ondes. 10m
    • 4:30 PM 4:45 PM
      Martina Monti - Calabi-Yau manifolds quotient of Abelian manifold : the 3-dimensional cases. 15m

      It is possible to construct Calabi-Yau manifolds as quotient of complex tori via certain action of finite groups. We are interested in the study of the geometric properties behind this construction, in particular if we can deduce geometry of the Calabi-Yau manifold from the geometry of the complex tori. In this talk I will focus on the 3 dimensional case, presenting my results about the geometry of Calabi-Yau 3-folds as quotient of Abelian 3-folds.

    • 4:45 PM 5:05 PM
      Ahmad Zorkot - Approximation for mean field games 20m
    • 6:30 PM 8:00 PM
      Cocktail 1h 30m
    • 9:00 AM 9:30 AM
      Accueil et café / Welcome and coffee 30m
    • 9:30 AM 9:45 AM
      Rodrigo Zelada - Shape Optimization for heat exchangers with ventcell conditions 15m
    • 9:45 AM 10:05 AM
      Haojie Hong - On primes of a class of algebraic numbers in quadratic fields 20m

      Let r be an algebraic number of degree 2 and not a root of unity. We can show that there exists a prime ideal P of Q(r) satisfying $\nu_P(r^n-1)\ge 1$, such that the rational prime underlying P grows quicker than n

    • 10:05 AM 10:15 AM
      Yunlei Wang - Spectral inequalities and their application to control of PDEs 10m
    • 10:15 AM 10:30 AM
      Tristan Carrel - Chimiométrie pour l'analyse du Skydrol 15m
    • 10:45 AM 11:15 AM
      Pause / Break 30m
    • 11:15 AM 11:30 AM
      Chadi Saba - The littlewood problem and non harmonic Fourier series 15m

      In this short talk, i will give a direct quantitative estimate of L 1 norms of nonharmonic trigonometric polynomials over large enough intervals.

    • 11:30 AM 11:45 AM
      Aimene Gouasmi - Flux reconstruction for interface problemes and applications to a posteriori error analysis 15m
    • 11:45 AM 12:05 PM
      Rouba Safi - Discrete Embedding Of Hamiltonian Systems And Variational Integrators. 20m

      An introduction to the discrete embedding of Lagrangian and Hamiltonian systems using a discrete differential and integral calculus of order one. This theory is compared with the seminal work of J-E. Marsden and M. West on variational integrators.

    • 12:05 PM 12:20 PM
      Joyce Ghantous - Numerical analysis of a diffusion equation with Ventcel boundary condition using curved meshes 15m

      We define a higher-order finite element method for numerically approximating the solution of a scalar diffusion equation on a bounded domain with the so-called Ventcel boundary conditions.

    • 12:30 PM 2:00 PM
      Pause repas / Lunch break 1h 30m
    • 2:00 PM 2:10 PM
      Théo Coiffard - Lattice Boltzmann model for fluid flow in porous media : a probabilistic and partial bounce-back method 10m
    • 2:10 PM 2:30 PM
      Dieunel Dor - On the hyperbolic relaxation of the Cahn-Hilliard equation with biological applications 20m
    • 2:30 PM 2:45 PM
      Issa-Mbenard Dabo -Introduction to free probabilities 15m
    • 3:00 PM 3:30 PM
      Parité : quelques éléments de réflexion, par Sandrine Dallaporta / Talk about gender equality by Sandrine Dallaporta 30m
    • 3:30 PM 4:00 PM
      Pause / Break 30m
    • 4:00 PM 4:20 PM
      Rachad Bentbib - Groupes en théorie des modèles 20m
    • 4:20 PM 4:30 PM
      Giuseppe Lamberti - Interpolation in spaces of holomorphic functions 10m
    • 4:30 PM 4:45 PM
      Marco Artusa - Exploring Geometric Intuition in Number Theory: the study of the Weil group 15m
    • 7:00 PM 9:00 PM
      Diner social / Social dinner 2h
    • 8:30 AM 9:00 AM
      Accueil et café / Welcome and coffee 30m
    • 9:00 AM 10:00 AM
      Présentation des intervenants et de leurs parcours : Cecile Taing, Gilles Baube, Perrine Burdeyron, Tuong Huy Nguyen / Presentations of the speakers and their professional careers 1h
    • 10:15 AM 11:30 AM
      Tables rondes / Exchange with the speakers 1h 15m
    • 11:45 AM 12:15 PM
      Mot de fin / Closing talk 30m