Results 141 to 150 of about 2,313 (171)

Automated multi-class ECG arrhythmia detection using VMD and multi-task optimization. [PDF]

Sci Rep
Krishna YM, Vasavi KP, Chaitanya MK, Yedukondalu J, Kumar NU, Naseeba B.   +5 more
europepmc   +1 more source

Long-term memory induced correction to Arrhenius law. [PDF]

Nat Commun
Barbier-Chebbah A, Bénichou O, Voituriez R, Guérin T.   +3 more
europepmc   +1 more source

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The inverse of circulant matrix

Applied Mathematics and Computation, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

Optimization of a Quadratic Function with a Circulant Matrix

Computational Optimization and Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hoang Tuy, Faiz Al-Khayyal, Tuy Hoang
exaly   +3 more sources

Circulant and Skewcirculant Matrices for Solving Toeplitz Matrix Problems

SIAM Journal on Matrix Analysis and Applications, 1992
Circulant and skewcirculant approximations to Toeplitz matrices are considered. Using these approximations, eigenvalue bounds are obtained as well as modified methods for computing the eigenvalues and eigenvectors of Toeplitz matrices.
Thomas Huckle
exaly   +2 more sources

g-Circulant solutions to the (0,1) matrix equation Am=Jn

Linear Algebra and Its Applications, 2002
This paper discusses the structure of g-circulant solutions to Am=Jn, where A is an unknown (0,1) matrix and Jn is a matrix of order n with all entries equal to 1. Wang has made a conjecture on the form of all such solutions.
Li, Qiao, Jia, Rui-Zhong, Wu, Yao-Kun, Qiao Li, Rui-Zhong Jia, Yao-Kun Wu   +5 more
exaly   +2 more sources

Circulating matrix metaloproteinases as biomarkers in colorectalcancer

Perspectives in Surgery, 2020
The aim of this research is to offer comprehensive point of view related to perspective tumor markers called matrix metaloproteinases and their natural tissue inhibitors. Those markers are potentially useable mainly in postoperative follow-up in patients with colorectal cancer.
M, Čurillová, M, Karlíková, V, Karnos, O, Topolčan   +3 more
openaire   +2 more sources

The Pseudoinverse of a Composite Matrix of Circulants

SIAM Journal on Applied Mathematics, 1973
This paper characterizes the pseudoinverse of a certain, class of square composite matrices which are circulants in the composite sense and whose elements are square circulants.
Pye, W. C., Boullion, T. L., Atchison, T. A.   +2 more
openaire   +2 more sources

The inverse of a block-circulant matrix

IEEE Transactions on Antennas and Propagation, 1983
The inverse A^{-1} of a block-circulant matrix (BCM) A is given in a closed form, by using the fact that a BCM is a combination of permutation matrices, whose eigenvalues and eigenvectors are found with the help of the complex roots of unity. Special results are also given when A is block symmetric or symmetric.
De Mazancourt, T., Gerlic, D.
openaire   +2 more sources

THE SPECTRAL NORM OF A CIRCULANT MATRIX

JP Journal of Algebra, Number Theory and Applications, 2018
Summary: Let \(\mathbf{x}=(x_0,\ldots,x_{n-1})\in\mathbb{R}^n\), \(\mathbf{C(x)}\) be the corresponding circulant matrix, and \(\|\cdot\|\) denote the spectral norm. We prove that if the matrix \(\mathbf{C}(\mathbf{x})^T\mathbf{C}(x)\geq \mathbf{O}\) (entrywise), i.e., if \[\begin{aligned} \sum^{n-1}_{i=0}x_i x_{i+j-1}\geq\,\,\text{for all}\,\,j=1 ...
Merikoski, Jorma K., Haukkanen, Pentti, Mattila, Mika, Tossavainen, Timo   +3 more
openaire   +2 more sources