Results 11 to 20 of about 19,039,568 (311)

Intervals of P-matrices and related matrices

Linear Algebra and its Applications, 1984
First, necessary and sufficient conditions for an interval matrix are given to contain no other matrices but P-matrices, that is, matrices having only positive principal minors. Similar statements for some other classes of matrices are posed then. Second, applications of the derived assertions to some problems of analysis and optimization are given ...
Białas, S., Garloff, J.
openaire   +3 more sources

Characterizations of complex P-matrices

The Electronic Journal of Linear Algebra
A P-matrix is a square matrix all of whose principal minors are positive. The characterization of real P-matrices as matrices that do not reverse the sign of any nonzero real vector is generalized to complex P-matrices by associating them with the reflection of complex vectors.
Michael Tsatsomeros, Dale Olesky, Pauline Van den Driessche   +2 more
openaire   +2 more sources

Matrices

, 2022
Orthologous matrices for constructing the phylogenetic tree.
Jia anqiang (13171782)
core   +1 more source

Large-Scale Visualization of Sparse Matrices [PDF]

, 2014
An efficient algorithm for parallel acquisition of visualization data for large sparse matrices is presented and evaluated both analytically and empirically.
Tvrdik, P., Dytrych, T., Langr, D., Simecek, I.   +3 more
core   +1 more source

On (k,p)-Fibonacci numbers and matrices [PDF]

Notes on Number Theory and Discrete Mathematics
In this paper, some relations between the powers of any matrices X satisfying the equation Xᵏ-pXᵏ⁻¹-(p-1)X-I=0 and (k,p)-Fibonacci numbers are established with ...
Sinan Karakaya, Halim Özdemir, Tuğba Demirkol   +2 more
doaj   +1 more source

On Rump’s characterization of P-matrices [PDF]

Optimization Letters, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

A note on generating P-matrices [PDF]

Optimization Letters, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

An alternative error bound for linear complementarity problems involving BS $B^{S}$-matrices

Journal of Inequalities and Applications, 2018
An alternative error bound for linear complementarity problems for BS $B^{S}$-matrices is presented. It is shown by numerical examples that the new bound is better than that provided by García-Esnaola and Peña (Appl. Math. Lett.
Lei Gao
doaj   +1 more source

Efficient and accurate P-value computation for Position Weight Matrices

Algorithms for Molecular Biology, 2007
Background Position Weight Matrices (PWMs) are probabilistic representations of signals in sequences. They are widely used to model approximate patterns in DNA or in protein sequences.
Varré Jean-Stéphane, Touzet Hélène
doaj   +1 more source

Generalised relations between P- and Y-matrices and their applications

The Journal of Engineering, 2014
The P-matrix is commonly used to analyse surface acoustic waves (SAW) elements such as the interdigital transducer (IDT) but, when some IDTs are connected through their acoustic ports, their frequency response could be calculated easily in terms of their
Jaime Octavio Guerra-Pulido, Pablo Roberto Pérez-Alcázar   +1 more
doaj   +1 more source