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871.
872.
WANG Gui-xia 《数学季刊》2007,22(4):602-606
In this paper we give the proof about the equivalence of the complete Einstein- Kahler metric and the Bergman metric on Cartan-Hartogs domain of the third type. And we obtain the method of getting the equivalence of two metrics. 相似文献
873.
严荣沐 《数学物理学报(A辑)》2006,(Z1)
In this article, the author discusses the dimension of holomorphic automorphism groups on hyperbolic Reirihardt domains. and classifies those hyperbolic Reinhardt domains whose automorphism group has prescribed dimension n2 - 2 (where n is the dimension of domain). 相似文献
874.
Jin-sheng Gu 《计算数学(英文版)》1998,(1)
1.IntroductionFOrsimplicityoftheexposition,weconsidertheellipticboundaryvalueproblemonaboundedopenpolygonaldomainfiCEZwhereItiswell--knownthat(1.1)hasauniquesolutionueH'(fl)(of.[7,15,16]).Supposethatfib~{e}isaquajsi--uniformmeshoffi,i.e.,fibsatisfieswhere… 相似文献
875.
We characterize the smallest (best) barrier parameter of self-concordant barriers for homogeneous convex cones. In particular, we prove that this parameter is the same as the rank of the cone which is the number of steps in a recursive construction of the cone (Siegel domain construction). We also provide lower bounds on the barrier parameter in terms of the Carathéodory number of the cone. The bounds are tight for homogeneous self-dual cones. © 1998 The Mathematical Programming Society, Inc. Published by Elsevier Science B.V.Research supported in part by an operating grant from NSERC of Canada.Research supported in part by the National Science Foundation under grant DMS-9306318. 相似文献
876.
Yu.A. Mityagin V.N. Murzin Yu.A. Efimov G.K. Rasulova 《Superlattices and Microstructures》1998,24(6):449-452
The sequential excited-to-excited state resonant tunneling effect was observed in weakly coupled long-period superlattices resulting in additional negative differential conductivity resonances in multistable current–voltage characteristics. The results obtained show the evidence of the highly nonequilibrium distribution of carriers over subbands with energies below the optical phonon energy in superlattices. A new type of electric field domains, due to resonant tunneling between excited subbands in adjacent wells, is considered, and experimental evidencies of such a domain's existence are given. 相似文献
877.
A new imaging system based on optical frequency domain reflectometry is presented. The intensity-integration effect of the
charge coupled device camera to be used acts effectively as a low pass filter for the intensity fluctuation and the 2nd order
moment of the detected signals is proportional to a low beat frequency component of the interference signal. Consequently,
two-dimensionally imaging of the reflectance of a selective plane located in scattering media is demonstrated. 相似文献
878.
Toshiyuki Taniuchi Hiroshi Kumigashira Masato Kubota Takanori Wakita Takanori Yokoya Kanta Ono Masaharu Oshima Mikk Lippmaa Hideomi Koinuma 《Surface science》2007,601(20):4690-4693
We have used photoelectron emission microscopy (PEEM) and X-ray magnetic circular dichroism (XMCD) to study the effect of thin film thickness on the magnetic domain formation in La0.6Sr0.4MnO3 samples that were epitaxially grown on stepped SrTiO3 (0 0 1) substrates. The magnetic image exhibited a stripe structure elongated along the step direction, irrespective of film thickness, suggesting that uniaxial magnetic anisotropy induced by step-and-terrace structures plays an important role in the magnetic domain formation. Additional domains evolved gradually with increasing film thickness. In these domains, the direction of magnetization differed from the step direction due to biaxial magneto-crystalline anisotropy. The evolution of additional magnetic domains with increasing film thickness implies that a competition exists between the two anisotropies in LSMO films. 相似文献
879.
The existence of weak attractors is established for set-valued dynamical systems which are weakly asymptotically compact and
weakly dissipative. Here weak properties mean with respect to at least one trajectory for each initial value. A condition
ensuring the uniqueness of such weak attractors is given. The results are illustrated with an application involving a partial
differential inclusion in bounded and unbounded domains.
Mathematics Subject Classifications (2000) 34D45, 37B25, 37B75, 58C06. 相似文献
880.