Zobrazeno 1 - 10
of 818
pro vyhledávání: '"Ahmedou, A."'
We study the following Neumann boundary problem related to the stationary solutions of the Keller-Segel system, a basic model of chemotaxis phenomena: \[ -\Delta_g u +\beta u =\lambda\left(\frac{Ve^u}{\int_{\Sigma} Ve^u d v_g}-\frac{1}{|\Sigma|_g}\ri
Externí odkaz:
http://arxiv.org/abs/2409.00519
This work studies the partial blow-up phenomena for the $SU(3)$ Toda system on compact Riemann surfaces with smooth boundary. We consider the following coupled Liouville system with Neumann boundary conditions: $$ -\Delta_g u_1 = 2\rho_1\left( \frac{
Externí odkaz:
http://arxiv.org/abs/2408.17372
On a compact Riemann surface $(\Sigma, g)$ with a smooth boundary $\partial \Sigma$, we consider the following mean field equations with Neumann boundary conditions: $$ -\Delta_g u = \lambda \left(\frac{Ve^u}{\int_{\Sigma} Ve^u \, dv_g} - \frac{1}{|\
Externí odkaz:
http://arxiv.org/abs/2408.16917
Given a smooth positive function $K$ on the standard sphere $(\mathbb{S}^n,g_0)$, we use Morse theoretical methods and counting index formulae to prove that, under generic conditions on the function $K$, there are arbitrarily many metrics $g$ conform
Externí odkaz:
http://arxiv.org/abs/2407.18622
In this paper, we extend the analysis of the subcritical approximation of the Nirenberg problem on spheres recently conducted in \cite{MM19, MM}. Specifically, we delve into the scenario where the sequence of blowing up solutions exhibits a non-zero
Externí odkaz:
http://arxiv.org/abs/2404.13341
Autor:
Ahmedou, Sidi-Ely, Dauliat, Romain, Parriaux, Alexandre, Malfondet, Alix, Millot, Guy, Labonte, Laurent, Tanzilli, Sébastien, Dalidet, Romain, Delagnes, Jean-Christophe, Roy, Philippe, Jamier, Raphael
Publikováno v:
Optics Express, Vol. 30, Issue 6, pp. 8550-8559 (2022)
We report on the conception, fabrication and characterization of a new concept of optical fiber enabling a precise control of the ratio between the 2nd and 4th-order of chromatic dispersion (respectively \b{eta}2 and \b{eta}4) at 1.55 micro-meter whi
Externí odkaz:
http://arxiv.org/abs/2401.16973
Autor:
Malfondet, Alix, Deroh, Moise, Ahmedou, Sidi-Ely, Parriaux, Alexandre, Hammani, Kamal, Dauliat, Romain, Labonté, Laurent, Tanzilli, Sébastien, Delagnes, Jean-Christophe, Roy, Philippe, Jamier, Raphaël, Millot, Guy
Publikováno v:
ACS Photonics, 2024
In this paper, we introduce an all-fibered dual-comb spectrometer based on a new design of highly nonlinear fiber to efficiently convert frequency combs from 1.55 micron to 2 micron We show that our spectrometer can be used to measure absorption prof
Externí odkaz:
http://arxiv.org/abs/2307.13406
Autor:
Dalidet, Romain, Martin, Anthony, Riesner, Mattis, Ahmedou, Sidi-Ely, Dauliat, Romain, Leconte, Baptiste, Walter, Guillaume, Sauder, Grégory, Delagnes, Jean-Christophe, Millot, Guy, Roy, Philippe, Jamier, Raphaël, Tanzilli, Sébastien, Labonté, Laurent
Since the first proof-of-principle experiments 25 years ago, quantum metrology has matured from fundamental concepts to versatile and powerful tools in a large variety of research branches, such as gravitational-wave detection, atomic clocks, plasmon
Externí odkaz:
http://arxiv.org/abs/2305.16045
This study uses the Lyapunov method, the Poincar\'e-Bendixson theorem, and the Dulac criterion to analyze the stability of SIR and SIRS with non-monotone incidence and different mortality rates.
Comment: 7 pages,1 figure
Comment: 7 pages,1 figure
Externí odkaz:
http://arxiv.org/abs/2304.12864
Autor:
Habott, Fatimetou1 (AUTHOR) habott.ext@iup.e-una.mr, Ahmedou, Aziza2 (AUTHOR) aziza@iup.e-una.mr, Mohamed, Yahya3 (AUTHOR) yahya@fsje.e-una.mr, Sambe, Mohamed Ahmed2 (AUTHOR) medah.baba@iup.e-una.mr
Publikováno v:
Symmetry (20738994). Nov2024, Vol. 16 Issue 11, p1448. 18p.
