Results 201 to 210 of about 17,645 (222)

Marked point process variational autoencoder with applications to unsorted spiking activities. [PDF]

PLoS Comput Biol
Shibue R, Iwata T.
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Positivity of Block Tridiagonal Matrices

SIAM Journal on Matrix Analysis and Applications, 1998
The authors give some results concerning the disconjugacy of linear Hamiltonian difference systems \[ \Delta x_k = A_k x_{k+1} + B_k u_k,\quad \Delta u_k = C_k x_{k+1} - A_k^T u_k \] and hence positive definiteness of the discrete quadratic functional \[ {\mathcal F}(x,u) ={\sum_{k=0}^N} \{u_k^T B_k u_k + x_{k+1}^T C_k x_{k+1}\} \] to positive ...
Bohner, Martin, Došlý, Ondřej
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Parallel Factorizations for Tridiagonal Matrices

SIAM Journal on Numerical Analysis, 1993
Summary: The authors analyze the problem of solving tridiagonal linear systems on parallel computers. A wide class of efficient parallel solvers is derived by considering different parallel factorizations of partitioned matrices. These solvers have a minimum requirement of data transmission. In fact, communication is only needed for solving a ``reduced
P. AMODIO, BRUGNANO, LUIGI, T. POLITI
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Tridiagonal M-matrices whose inverse is tridiagonal and related pentadiagonal matrices

Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Barreras, A., Peña, J. M.
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Fine Spectra of Tridiagonal Toeplitz Matrices

Ukrainian Mathematical Journal, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bilgiç, H., Altun, M.
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Toeplitz Matrices and Commuting Tridiagonal Matrices

SIAM Journal on Matrix Analysis and Applications, 1991
A new proof is presented of the existence of commuting tridiagonal matrices for a particular family of Toeplitz matrices.
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Block tridiagonalization of "effectively" sparse symmetric matrices

ACM Transactions on Mathematical Software, 2004
A block tridiagonalization algorithm is proposed for transforming a sparse (or "effectively" sparse) symmetric matrix into a related block tridiagonal matrix, such that the eigenvalue error remains bounded by some prescribed accuracy tolerance.
Bai, Yihua, Gansterer, Wilfried, Ward, Robert C.   +2 more
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Remarks on anti-tridiagonal matrices

Applied Mathematics and Computation, 2020
The authors provide several spectral considerations on anti-tridiagonal matrices of the following type: \[\left( \begin{array}{cccccccc} & & & & & & * & * \\ & \mathbf{0} & & & & * & * & * \\ & & & & \cdot & \cdot & * & \\ & & & \cdot & \cdot & \cdot & & \\ & & \cdot & \cdot & \cdot & & & \\ & * & \cdot & \cdot & & & & \\ * & * & * & & & & \mathbf{0} &
Natália Bebiano, Susana Furtado
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