Concept

Théorème des nombres premiers

Publications associées (60)

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Eléments d'Economie territoriale et urbaine

Emmanuel Pierre Jean Ravalet

Le rapport a pour objectif principal de vulgariser un certain nombre de notions et d'approches propres à l'économie territoriale et urbaine. Il s'adresse au réseau des chargés d'études économiques des services déconcentrés du MEEDDM. Les personnels travail ...

Editions du Certu2009

On the essential dimension of cyclic p-groups

Let p be a prime number, let K be a field of characteristic not p, containing the p-th roots of unity, and let r >= 1 be an integer. We compute the essential dimension of Z/p(r) Z over K (Theorem 4.1). In particular, i) We have edℚ(ℤ/8ℤ)=4, a result which ...

Springer-Verlag2008

Analytical Determination of DC-Bus Utilization Limits in Multiphase VSI Supplied AC Drives

Drazen Dujic

Two-level multiphase voltage source inverters (VSIs) are typically used as the supply for multiphase machines. Such machines are often with concentrated winding in which case, certain low-order stator current harmonics are injected to provide torque enhanc ...

2008

SensorScope, un système clef en main de surveillance de l'environnement

Martin Vetterli, Guillermo Barrenetxea Kobas, François Ingelrest

Given the importance of climate changes and their potentially dramatic consequences for human beings, designing precise and reliable evolution models is of prime importance. Unfortunately, current data collection techniques are rather limited as they make ...

2008

The DIRAC AWEAR Audio-Visual Platform for Detection of Unexpected and Incongruent Events

Petr Motlicek, Hynek Hermansky, Barbara Caputo, Jie Luo

It is of prime importance in everyday human life to cope with and respond appropriately to events that are not foreseen by prior experience. Machines to a large extent lack the ability to respond appropriately to such inputs. An important class of unexpect ...

2008

Study of B̄0→D0π+π- decays

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Lei Zhang, Vladislav Balagura

We report the results of a study of neutral B meson decays to the D0π+π- final state, where the D0 is fully reconstructed. The results are obtained from an event sample containing 388×106 BB̄-meson pairs collected in the Belle experiment at the KEKB e+e- c ...

2007

New bench test for venous cannula performance assessment

Julien Favre

Cannula design is of prime importance for venous drainage during cardiopulmonary bypass (CPB). To evaluate cannulas intended for CPB, an in vitro circuit was set up with silicone tubing between the test cannula encased in a movable preload reservoir and an ...

2007

Primality Testing

Kamal Tahiri Jouti

Since the discovery of the utility of the numbers, the human being tried to differentiate them. We decide between them according to whether they are even or odd. Or, according to the fact that they are prime or composite. A natural number n >1 is called a ...

2006

Observation of the D1(2420)→Dπ+π- decays

Tagir Aushev, Sun Hee Kim, Ji Hyun Kim, Jing Li

We report on the first observation of D10(2420)→D0π-π+ and D1+(2420)→D+π-π+ decays (where the contribution from the dominant known D1→D*π decay mode is excluded) in the B-→D10π- and B̄0→D1+π- decays, respectively. The observation is based on 15.2×107 BB̄ e ...

2005

On the Discrete Logarithm Problem on Algebraic Tori

Robert Granger

Using a recent idea of Gaudry and exploiting rational representations of algebraic tori, we present an index calculus type algorithm for solving the discrete logarithm problem that works directly in these groups. Using a prototype implementation, we obtain ...

Springer Berlin Heidelberg2005