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Affichage de 481 à 490 sur 596

Article dans une revue

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⟩

Article dans une revue

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⟩

Article dans une revue

Residual Based a Posteriori Error Estimators for Harmonic A/φ and T/Ω Formulations in Eddy Current Problems

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

For eddy current problems, potential formulations are widely used nowadays. In this paper, residual based a posteriori error estimators are introduced to evaluate the discretization error in the finite element calculation in both case of A /φ and T /Ω harmonic formulations. A device with eddy...

IEEE Transactions on Magnetics, 2013, 49 (5), pp.1721-1724. ⟨10.1109/TMAG.2013.2241408⟩. ⟨hal-00910319⟩

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Development of superhydrophilic and superhydrophobic polyester fabric by growing Zinc Oxide nanorods

Anne Perwuelz, Munir Ashraf, Christine Campagne, Philippe Champagne, Anne Leriche, Christian Courtois

ZnO nanorods were grown on microfibers of Polyethylene terephthalate (PET) fabric by seeding method to develop hierarchical roughness structure. XRD and XPS analysis show the presence of crystalline ZnO and chemical Zn species at the fiber surface at each stage of the process. Five series of...

Journal of Colloid and Interface Science, 2013, 394, pp.545-553. ⟨10.1016/j.jcis.2012.11.020⟩. ⟨hal-03033269⟩

Article dans une revue

On actions and strict actions in homological categories

Manfred Hartl, Bruno Loiseau

Let $G$ be an object of a finitely cocomplete homological category $\mathbb C$. We study actions of $G$ on objects $A$ of $\mathbb C$ (defined by Bourn and Janelidze as being algebras over a certain monad $\mathbb T_G$), with two objectives: investigating to which extent actions can be described in...

Theory and Applications of Categories, 2013, 27 (15), pp.347-392. ⟨hal-03149616⟩

Article dans une revue

Classes de Steinitz dʼextensions galoisiennes à groupe de Galois de centre non trivial

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. R m(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...

Journal of Number Theory, 2013, 133 (2), pp.611-619. ⟨10.1016/j.jnt.2012.08.015⟩. ⟨hal-03187571⟩

Article dans une revue

On Some Holomorphic Cohomological Equations

Aziz El Kacimi Alaoui

Let Σ be a non compact Riemann surface and γ:Σ⟶Σ an automorphism acting freely and properly such that the quotient M = Σ/γ is a non compact Riemann surface. Using the fact that Σ and M are Stein manifolds, we prove that, for any holomorphic function g:Σ⟶C and any λ∈C , there exists a holomorphic...

Results in mathematics = Resultate der Mathematik, 2013, 63 (1-2), pp.329-334. ⟨10.1007/s00025-011-0201-2⟩. ⟨hal-03148580⟩

Article dans une revue

Numerical approximation for options pricing of a stochastic volatility jump-diffusion model

Rajae Aboulaich, Fouzia Baghery, Abdelilah Jraifi

In this paper, we are interested in pricing options (European and Quanto) by a Model in which the asset prices follow a jump-diffusion model with a stochastic volatility in n dimensions. The stochastic volatility also follows the jump-diffusion in d dimensions. We've already stated the...

International Journal of Applied Mathematics and statistics, 2013, 50 (20), pp.69-82. ⟨hal-03134982⟩

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Calcite as a bone substitute. Comparison with hydroxyapatite and tricalcium phosphate with regard to the osteoblastic activity

Francine Monchau, Philippe Hivart, Benoit Genestie, Feng Chai, Michel Descamps, Hartmut Frederic Hildebrand

Close to the bone mineral phase, the calcic bioceramics, such as hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), are commonly used as substitutes or filling materials in bone surgery. Besides, calcium carbonate (CaCO3) is also used for their excellent biocompatibility and bioactivity....

Materials Science and Engineering: C, 2013, 33 (1), pp.490-498. ⟨10.1016/j.msec.2012.09.019⟩. ⟨hal-03032812⟩

Article dans une revue

Convergence order of a numerical scheme for sweeping process

Frederic Bernicot, Juliette Venel

In a previous paper, an implementable algorithm was introduced to compute discrete solutions of sweeping processes (i.e. specific first order differential inclusions). The convergence of this numerical scheme was proved thanks to compactness arguments. Here we establish that this algorithm is of...

SIAM Journal on Control and Optimization, 2013, 51 (4), pp.3075-3092. ⟨10.1137/120882044⟩. ⟨hal-00517485v2⟩