نتایج جستجو برای: degenerate kernel

تعداد نتایج: 71126  

2006
G. Akemann

We compute all massive partition functions or characteristic polynomials and their complex eigenvalue correlation functions for non-Hermitean extensions of the symplectic and chiral symplectic ensemble of random matrices. Our results are valid for general weight functions without degeneracies of the mass parameters. The expressions we derive are given in terms of the Pfaffian of skew orthogonal...

2008
H. Majidian

We consider the eigenvalue problem of certain kind of non-compact linear operators given as the sum of a multiplication and a kernel operator. A degenerate kernel method is used to approximate isolated eigenvalues. It is shown that entries of the corresponding matrix of this method can be evaluated exactly. The convergence of the method is proved; it is proved that the convergence rate is O(h)....

Journal: :Applied Mathematics and Computation 2003
Seiichi Nakamori Raquel Caballero-Águila Aurora Hermoso-Carazo Josefa Linares-Pérez

This paper proposes recursive least-squares (RLS) filtering and fixed-point smoothing algorithms with uncertain observations in linear discrete-time stochastic systems. The estimators require the information of the auto-covariance function in the semi-degenerate kernel form, the variance of white observation noise, the observed value and the probability that the signal exists in the observed va...

2012
M. Bulatov P. Lima E. Weinmüller Mikhail V. Bulatov Pedro M. Lima Ewa B. Weinmüller

In this article, we consider systems of integral-algebraic and integro-differential equations with weakly singular kernels. In the first part, we deal with two-dimensional integralalgebraic equations. Next, we analyze Volterra integral equations of the first kind with a degenerate matrix-kernel on the diagonal. Finally, the third part of the work is devoted to the analysis of degenerate integro...

2009
Xiaonan Ma George Marinescu GEORGE MARINESCU

We establish the existence of the asymptotic expansion of the Bergman kernel associated to the spin Dirac operators acting on high tensor powers of line bundles with non-degenerate mixed curvature (negative and positive eigenvalues) by extending [15]. We compute the second coefficient b1 in the asymptotic expansion using the method of [24].

2005
GEORGE MARINESCU

We establish the existence of the asymptotic expansion of the Bergman kernel associated to the spin Dirac operators acting on high tensor powers of line bundles with non-degenerate mixed curvature (negative and positive eigenvalues) by extending [15]. We compute the second coefficient b1 in the asymptotic expansion using the method of [24].

2001
Chih-Jen Lin

Recently the asymptotic convergence of some commonly used decomposition methods for support vector machines has been established. However, their local convergence rates are still unknown. In this paper, under the assumptions that the kernel matrix is positive definite and the problem is non-degenerate, we prove the linear convergence of a popular decomposition method.

2007
ELENA LOLI PICCOLOMINI FABIANA ZAMA

In this work we analyze ill{posed problems modelled by rst kind Fred-holm integral equations with non degenerate kernel. We survey the main properties of the least{squares solutions and derive the regularized solutions in the cases of Truncated Singular Value Decomposition, Tikhonov method and Conjugate Gradient regularization method. Numerical results are reported in the case of medical imagin...

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