Publicaciones

• ART

A posteriori error estimator for harmonic A‐φ formulation

Zuqi Tang, Yvonnick Le Menach, Emmanuel Creusé, Serge Nicaise, Francis Piriou, Nicolas Nemitz

Purpose - In this paper, the aim is to propose a residual-based error estimator to evaluate the numerical error induced by the computation of the electromagnetic systems using a finite element method in the case of the harmonic A-? formulation. Design/methodology/approach - The residual based error...

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2013, 32 (4), pp.1219-1229. ⟨10.1108/03321641311317040⟩. ⟨hal-00910309⟩

• ART

Braided algebras and their applications to Noncommutative Geometry

Dimitri Gurevich, Pavel Saponov

We introduce the notion of a braided algebra and study some examples of these. In particular, R-symmetric and R-skew-symmetric algebras of a linear space V equipped with a skew-invertible Hecke symmetry R are braided algebras. We prove the “mountain property” for the numerators and denominators of...

Advances in Applied Mathematics, 2013, 51 (2), pp.228-253. ⟨10.1016/j.aam.2013.02.004⟩. ⟨hal-03155708⟩

• ART

Processing and properties of biphasic calcium phosphates bioceramics obtained by pressureless sintering and hot isostatic pressing

Michel Descamps, Laurent Boilet, Gérard Moreau, Arnaud Tricoteaux, Jianxi Lu, Anne Leriche, Véronique Lardot, Francis Cambier

Calcium phosphate powders were obtained from coprecipitation method using diammonium phosphate and calcium nitrate solutions. The adjustment of experimental parameters and Ca/P initial ratio allowed synthesizing stoichiometric HA and β-TCP powders and four biphasic calcium phosphates (BCP) with...

Journal of the European Ceramic Society, 2013, 33 (7), pp.1263-1270. ⟨10.1016/j.jeurceramsoc.2012.12.020⟩. ⟨hal-03033125⟩

• COMM

Reflection Equation Algebra and its applications to Noncommutative Geometry

Dimitri Gurevich

Reflection Equation Algebra (REA) is one of the central objects of Braided Geometry. By Braided Geometry I mean a theory related to a braiding, i.e. a solution to the Quantum Yang-Baxter Equation. I’ll exhibit properties of the REA related to different types of braidings. Also, I’ll explain the...

algebrabelfast2013 : Algebra, Combinatorics, Dynamics and Applications, Sep 2013, Belfast, Ireland. pp.228-253. ⟨hal-03155704⟩

• THESE

New tools for animation and design : a haptic-based system for stop motion camera animation and curve design by algebraic-trigonometric Pythagorean Hodograph curves, Nouveaux outils pour l'animation et le design : système d'animation de caméra pour la stop motion, fondée sur une interface haptique et design de courbes par des courbes algébriques-trigonométriques à hodographe pythagorien

Laura Saini

In the first part, we present a new system that allows to create realistic cameramovements for a stop motion animation. The system improves traditional 3D software animation programs (for example Maya and 3D Studio Max) for creatingstop motion camera movements by using an haptic interface. After..., Dans la première partie de la thèse, nous présentons un nouveau système permettant de produire des mouvements de caméra réalistes pour l’animation stopmotion. Le système permettra d’enrichir les logiciels d’animation 3D classiques (comme par exemple Maya et 3D Studio Max) afin de leur faire...

Other. Université de Valenciennes et du Hainaut-Cambresis, 2013. English. ⟨NNT : 2013VALE0013⟩. ⟨tel-00835671v2⟩

• ART

Classes de Steinitz d'extensions galoisiennes à groupe de Galois un 2-groupe

Bouchaïb Sodaïgui

Let k be a number field and Cl(k) its class group. Let Γ be a finite group and |Γ | its order. Let R(k,Γ) (resp. Rm(k,Γ)) be the subset of Cl(k) consisting of those classes which are realizable as Steinitz classes of Galois extensions (resp. tamely ramified Galois extensions) of k with Galois group..., Soient k un corps de nombres et Cl(k) son groupe de classes. Soient Γ un groupe fini et |Γ | son ordre. Soit R(k,Γ) (resp.Rm(k,Γ)) le sous-ensemble de Cl(k) formé par les éléments qui sont réalisables par les classes de Steinitz d’extensions galoisiennes (resp. galoisiennes et modérément ramifiées...

Functiones et Approximatio Commentarii Mathematici, 2013, 48 (2), ⟨10.7169/facm/2013.48.2.2⟩. ⟨hal-03184707⟩

• THESE

Cohomologie de Dolbeault feuilletée de certaines laminations complexes, Cohomology of some complex laminations

Rochdi Ben Charrada

Dans cette thèse, nous nous s’intéressons au calcul des groupes de cohomologie de Dolbeault feuilletée H0∗L (M) de certaines laminations complexes. Ceci revient à résoudre le problème du ∂ le long des feuilles ∂Lα = ω. (Ici M est un espace métrique ou une variété dans le cas où L est un feuilletage..., In this thesis, we are interested in computing the foliated Dolbeault cohomology groups H0∗L (M) for some complex laminations. This amounts to solving the problem of the ∂ along the leaves ∂Lα = ω. (Here M is a metric space or a differentiable manifold if L is a foliation F.) Three situations were...

Autre. Université de Valenciennes et du Hainaut-Cambresis; Université de Sfax (Tunisie), 2013. Français. ⟨NNT : 2013VALE0010⟩. ⟨tel-00871710⟩

• THESE

Stabilization and approximation of some distributed systems by either dissipative or inde, Stabilisation et approximation de certains systèmes distribués par amortissement dissipatif et de signe indéfini

Farah Abdallah

In this thesis, we study the approximation and stabilization of some evolution equations, using semigroup theory and some spectral analysis. This Ph.D. thesis is divided into two main parts. In the first part, as in [3, 4], we consider the approximation of second order evolution equations modeling..., Dans cette thèse, nous étudions l'approximation et la stabilisation de certaines équations d'évolution, en utilisant la théorie des semi-groups et l'analyse spectrale. Cette thèse est divisée en deux parties principales. Dans la première partie, comme dans [3, 4], nous considérons l...

Other. Université de Valenciennes et du Hainaut-Cambresis; Université Libanaise, 2013. English. ⟨NNT : 2013VALE0015⟩. ⟨tel-00862708⟩

• COMM

Algebraic functor calculus and commutator theory

Manfred Hartl

Classically, Lie algebras can be considered as linearizations of groups in several ways, and thus provide key tools in group theory. With the emergence of more and more other non-linear algebraic structures the problem arises to generalize the relations between groups and Lie algebras to a much...

Kolloquium über Reine Mathematik, May 2013, Hambourg, Germany. ⟨hal-03177595⟩

• COMM

Parameter determination of a rosen type piezoelectric transformer operating in second mode

Faiza Boukazouha, Fouad Boubenider, Guylaine Poulin-Vittrant, Louis Pascal Tran-Huu-Hue, Marc Lethiecq, Mohamed Rguiti

2013 IV International Conference on Power Engineering, Energy and Electrical Drives (POWERENG), May 2013, Istanbul, Turkey. pp.485-489. ⟨hal-02019477⟩