http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Multivariable Recursively Generated Weighted Shifts and the 2-variable Subnormal Completion Problem
Idrissi, Kaissar,Zerouali, El Hassan Department of Mathematics 2018 Kyungpook mathematical journal Vol.58 No.4
In this paper, we give a new approach to solving the 2-variable subnormal completion problem (SCP for short). To this aim, we extend the notion of recursively generated weighted shifts, introduced by R. Curto and L. Fialkow, to 2-variable case. We next provide "concrete" necessary and sufficient conditions for the existence of solutions to the 2-variable SCP with minimal Berger measure. Furthermore, a short alternative proof to the propagation phenomena, for the subnormal weighted shifts in 2-variable, is given.
Variable Range Hopping in a Dilute GaAs/AlGaAs Hole System
Asmaa Chakhmane,Hassan El Idrissi,Abdelhamid El Kaaouachi,Mohamed Errai,Abdellatif El Oujdi,Adil Echchelh 한국물리학회 2019 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.75 No.5
In this work, we conducted an investigation concerning low-temperature electrical transport phenomena in a two-dimensional (2D) GaAs hole gas. The different carrier densities of the sample locate them on the insulating side of the metal-insulator transition (MIT). Two theoretical models of variable range hopping (VRH) conduction according to Mott (Mott VRH region) and according to Efros-Shklovskii (ES VRH region) are used in the modeling of the experimental measurements obtained by Qiuet \textit{et al.} [Phys. Rev. Lett. \textbf{108}, 106404 (2012)].