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HDR

Quelques aspects analytiques des zéros des fonctions L, Some analytical aspects of the zeros of L-functions

Kamel Mazhouda

Le mémoire de l'HDR présente une sélection de mes activités de recherche ayant consisté à étudier théoriquement et numériquement les zéros non-triviaux des fonctions L sur la ligne critique Re(s) = 1/2, où s est un nombre complexe. Les travaux variés présentés sont groupés en quatre parties...., The HDR thesis presents a selection of my research activities which consisted in studying theoretically and numerically the non-trivial zeros of the functions L on the critical line Re(s) = 1/2, where s is a complex number. The various works presented are grouped into four parts. The first three...

Mathématiques [math]. Université Polytechnique Hauts-de-France, 2020. ⟨tel-03977341⟩

Communication dans un congrès

Synthèse et développement de β-TCP dopés destinés à la fabrication de substituts osseux par robocasting

Nicolas Somers, Florian Jean, Marie Lasgorceix, Anthony Thuault, Cathy Delmotte, Nicolas Preux, Anne Leriche

Le β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) est un des matériaux le plus étudiés pour la réalisation de substituts osseux puisqu’il présente d’intéressantes propriétés de biocompatibilité, d'ostéoconductivité et de résorption. En effet, le TCP est largement utilisé pour le remodelage de...

6th annual meeting of the Commission mixte Matériaux pour la Santé, Oct 2020, France, France. ⟨hal-04393056⟩

Proceedings/Recueil des communications

Reflections on some research work of bang-yen chen

Joeri van Der Veken, Alfonso Carriazo, Ivko Dimitrić, Yun Myung Oh, Bogdan D Suceavă, Luc Vrancken

This essay provides a brief sketch of selected mathematical research work of Bang-Yen Chen done during the last fifty years.

Geometry of submanifolds AMS special session in honor of Bang-Yen Chen's 75th birthday, Oct 2018, Ann Arbor, Michigan, United States. 756, American Mathematical Society, 2020, Contemporary Mathematics, ⟨10.1090/conm/756/15195⟩. ⟨hal-03722847⟩

Communication dans un congrès

Warped product hypersurfaces in pseudo-riemannian real space forms

Marilena Moruz, Luc Vrancken

We study hypersurfaces in pseudo-Riemannian real space forms of non-zero sectional curvature, which write as a warped product of a 1-dimensional base with an (n − 1)-manifold of constant sectional curvature. We show that either they have constant sectional curvature or they are contained in a...

AMS Special Session on Geometry of Submanifolds, in honor of Bang-Yen Chen's 75th birthday, Oct 2018, Ann Arbor, Michigan, United States. pp.173-186, ⟨10.1090/conm/756/15207⟩. ⟨hal-03722924⟩

Article dans une revue

On product affine hyperspheres in ℝn+1

Xiuxiu Cheng, Zejun Hu, Marilena Moruz, Luc Vrancken

In this paper, we study locally strongly convex affine hyperspheres in the unimodular affine space ℝn+1 which, as Riemannian manifolds, are locally isometric to the Riemannian product of two Riemannian manifolds both possessing constant sectional curvature. As the main result, a complete...

Science China Mathematics, 2020, 63 (10), pp.2055-2078. ⟨10.1007/s11425-018-9457-9⟩. ⟨hal-03722937⟩

Article dans une revue

Nonlinear fractional Laplacian problems with nonlocal ‘gradient terms’

Boumediene Abdellaoui, Antonio J. Fernández Sánchez

Abstract Let $\Omega \subset \mathbb{R}^{N} $ , N ≽ 2, be a smooth bounded domain. For s ∈ (1/2, 1), we consider a problem of the form $$\left\{\begin{array}{@{}ll} (-\Delta)^s u = \mu(x)\, \mathbb{D}_s^{2}(u) + \lambda f(x), & {\rm in}\,\Omega, \\ u= 0, & {\rm in}\,\mathbb{R}^{N} \setminus...

Proceedings of the Royal Society of Edinburgh: Section A, Mathematics, 2020, 150 (5), pp.2682-2718. ⟨10.1017/prm.2019.60⟩. ⟨hal-03337289⟩

Communication dans un congrès

Fabrication of higher thermal stability doped β-tricalcium phosphate bioceramics by robocasting

Nicolas Somers, Florian Jean, Marie Lasgorceix, Anthony Thuault, Nicolas Preux, Cathy Delmotte, Fabrice Petit, Anne Leriche

β-tricalcium phosphate (β-TCP, β-Ca3(PO4)2) is one of the most attractive biomaterials for bone repair since it shows an excellent biological compatibility, osteoconductivity, and resorbability. Due to its interesting properties, it can be used to produce bone implants serving as temporary supports...

young Ceramists Additive Manufacturing Forum (YCAM 2020), Oct 2020, Online (Covid 19), France. ⟨hal-04393277⟩

Article dans une revue

Existence, Uniqueness and Stabilization of Solutions of a Generalized Telegraph Equation on Star Shaped Networks

Alaa Hayek, Serge Nicaise, Zaynab Salloum, Ali Wehbe

The existence, uniqueness, strong and exponential stability of a generalized telegraph equation set on one dimensional star shaped networks are established. It is assumed that a dissipative boundary condition is applied at all the external vertices and an improved Kirchhoff law at the common...

Acta Applicandae Mathematicae, 2020, 170 (1), pp.823-851. ⟨10.1007/s10440-020-00360-8⟩. ⟨hal-04304997⟩

Article dans une revue

Almost complex submanifolds of nearly Kähler manifolds

Limiao Lin, Luc Vrancken, Anne Wijffels

We study almost complex submanifolds of pseudo nearly Kähler manifolds. We show in particular that a 6 dimensional strict nearly Kähler manifold does not admit any 4 dimensional almost complex submanifolds. This generalises results obtained by Gray (Proc Am Math Soc 20:277–279, 1969) for the nearly...

Archiv der Mathematik, 2020, 115 (3), pp.353-358. ⟨10.1007/s00013-020-01469-w⟩. ⟨hal-03722951⟩

Article dans une revue

A Localized Phage-Based Antimicrobial System: Effect of Alginate on Phage Desorption from β-TCP Ceramic Bone Substitutes

Rached Ismail, Natalia Dorighello Carareto, Jean-Christophe Hornez, Franck Bouchart

Tricalcium phosphate (TCP) is a prosthetic material commonly used as a bone substitute to repair osteoarticular diseases and injuries. In this type of bone reconstruction surgery, antibiotics remain the common preventive and therapeutic treatment for bacterial infection. Nevertheless, the emergence...

Antibiotics, 2020, 9, pp.560. ⟨10.3390/antibiotics9090560⟩. ⟨hal-04279743⟩