排序方式: 共有162条查询结果,搜索用时 15 毫秒
91.
AN IMPROVED NONLINEAR CLOSED GRAPH THEOREM 总被引:1,自引:0,他引:1
References: 《高校应用数学学报(英文版)》2007,22(2):226-228
In this paper, a new nonlinear closed graph theorem is established, whose result improves substantially a recent-known important conclusion. 相似文献
92.
References: 《数学物理学报(B辑英文版)》2007,27(4):694-702
In this paper,solutions of Riemann boundary value problems with nodes are extended to the case where they may have singularties of high order at the nodes.Moreover, further extension is discussed when the free term of the problem involved also possesses singularities at the nodes.As an application,certain singular integral equation is discussed. 相似文献
93.
References: 《声学学报:英文版》2007,26(3):227-234
A robust algorithm of direction of arrival (DOA) estimation for coherent wideband sources in unknown correlated noise fields was investigated. The noise is usually unknown and correlated among sensors in practical applications, especially for arrays with comparatively small apertures. The spatially correlated noise incurs an increase in focusing error and a severe degradation in the DOA estimation, and therefore a method of focusing transformation based on differentiating covariance matrix was proposed to eliminate noise, hence reduce the focusing error. The simulation and experimental results demonstrate the effectiveness of the proposed method. 相似文献
94.
References: 《高校应用数学学报(英文版)》2007,22(3):353-365
A local convergence theorem and five semi-local convergence theorems of the secant method are listed in this paper.For every convergence theorem,a convergence ball is respectively introduced,where the hypothesis conditions of the corresponding theorem can be satisfied.Since all of these convergence balls have the same center x~*,they can be viewed as a homocentric ball. Convergence theorems are sorted by the different sizes of various radii of this homocentric ball, and the sorted sequence represents the degree of weakness on the conditions of convergence theorems. 相似文献
95.
96.
References: 《理论物理通讯》2007,47(1):19-21
Firstly we expand a finite-dimensional Lie algebra into a higher-dimenslonal one. By making use of the later and its corresponding loop algebra, the expanding integrable model of the multi-component NLS-mKdV hierarchy is worked out. 相似文献
98.
References: 《理论物理通讯》2007,47(1):41-44
Making use of the transformation relation among usual, normal, and antinormal ordering for the multimode boson exponential quadratic polynomial operators (BEQPO's)I we present the analytic expression of arbitrary matrix elements for BEQPO's. As a preliminary application, we obtain the exact expressions of partition function about the boson quadratic polynomial system, matrix elements in particle-number, coordinate, and momentum representation, and P representation for the BEQPO's. 相似文献
100.
References: 《高校应用数学学报(英文版)》2007,22(1):29-36
In this note, the regularity of Poisson equation -△u = f with f lying in logarithmic function space Lp(LogL)a(Ω)(1<p <∞, a ∈ R) is studied. The result of the note generalizes the W2,p estimate of Poisson equation in Lp(Ω). 相似文献