Results 311 to 320 of about 564,115 (361)
Some of the next articles are maybe not open access.
On positive definite solution of nonlinear matrix equations
Linear and Multilinear Algebra, 2017AbstractIn this article, we present a sufficient condition for the existence of a unique positive definite solution of the non-linear matrix equation , where , (the set of all Hermitian positive definite matrices), are non-singular matrices and are order-preserving mappings. We give an example of a non-linear matrix equation of the above form (, A is a
Sk. Monowar Hossein +2 more
openaire +1 more source
Positive definite solution of a nonlinear matrix equation
Journal of Fixed Point Theory and Applications, 2016The authors use fixed-point theory to present a sufficient condition for the existence of a positive definite solution of the nonlinear matrix equation \(X=Q\pm\sum_{i1}^m A_i^* F(X)A_i\), where \(Q\) is a positive definite matrix, \(A_i\)'s are arbitrary \(n\times n\) matrices and \(F\) is a monotone map from the set of positive definite matrices to ...
Bose, Snehasish +2 more
openaire +2 more sources
The approximate factorization of positive-definite matrix functions
Russian Mathematical Surveys, 1999It is well known that the prediction problem for a stationary process can be reduced to that of factorizing a positive-definite matrix function \(S(t)\) as \(S(t)= \chi^+(t)\cdot(\chi^+(t))^*\), \(|t|= 1\), where \(\chi^+\) is an outer analytic matrix function with entries of Hardy class \(H_2\) and \(^*\) denotes the Hermitian conjugate.
Janashia, G. A. +2 more
openaire +2 more sources
A positive-definite matrix which is not extendible
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1984This note treats the problem of extendibility of a positive-definite matrix. The difference between extendibility and positive- semidefiniteness in multiple dimensions is described. The construction of a positive definite nonextendible correlation matrix is also given.
openaire +2 more sources
Globally convergent Jacobi methods for positive definite matrix pairs
Numerical Algorithms, 2017V. Hari
semanticscholar +1 more source
Image clustering based on hermetian positive definite matrix and radial Jacobi moments
International Symposium on Computer Vision, 2018A. Hjouji +4 more
semanticscholar +1 more source
On Projection of a Positive Definite Matrix on a Cone of Nonnegative Definite Toeplitz Matrices
, 2018K. Filipiak +3 more
semanticscholar +1 more source
The biofilm matrix: multitasking in a shared space
Nature Reviews Microbiology, 2022Hans-Curt Flemming +2 more
exaly
Cubic Algorithm to Compute the Dynkin Type of a Positive Definite Quasi-Cartan Matrix
Fundamenta Informaticae, 2018C. Pérez, M. Abarca, D. Rivera
semanticscholar +1 more source