Results 51 to 60 of about 1,687,821 (139)

Network representation of the adjacency matrix.

open access: yes, 2022
The network of the adjacency matrix of Fig 22 is visualized.
Peter Eipert (14026368)   +5 more
core   +1 more source

MAGNETIC HÜCKEL THEORY: FRAMEWORK FOR THE HERMITIAN ADJACENCY MATRIX OF GRAPHS

open access: yesMathematical Modelling of Natural Phenomena
We introduce a magnetic extension of the Hückel molecular orbital (HMO) method in which the effect of an external magnetic field is incorporated through the Peierls substitution. In this formulation, the π -electron Hamiltonian of a conjugated molecule becomes a complex-weighted hopping operator ...
openaire   +1 more source

Hermitian and skew-Hermitian splitting methods for non-Hermitian positive definite linear systems

open access: yes, 2003
We study efficient iterative methods for the large sparse non-Hermitian positive definite system of linear equations based on the Hermitian and skew-Hermitian splitting of the coefficient matrix. These methods include a Hermitian/skew-Hermitian splitting
Golub, Gene H.   +2 more
core   +1 more source

When is the hermitian/skew-hermitian part of a matrix a potent matrix? [PDF]

open access: yes, 2012
[EN] This paper deals with the Hermitian H(A) and skew-Hermitian part S(A) of a complex matrix A. We characterize all complex matrices A such that H(A), respectively S(A), is a potent matrix.
Thome, Nestor, Ilisevic, Dijana
core   +1 more source

The Maximum Order of Adjacency Matrices With a Given Rank [PDF]

open access: yes
AMS Subject Classification: 05B20, 05C50.Graph;Adjacency ...
Peeters, M.J.P., Haemers, W.H.
core  

Hermitian Solutions to a Quaternion Matrix Equation

open access: yes, 2011
In this paper, we consider Hermitian and skew-Hermitian solutions to a certain matrix equation over quaternion algebra H. Necessary and sufficient conditions are obtained for the quaternion matrix equation to have Hermitian and skew-Hermitian solutions ...
Wen Feng Wang, Ning Li, Jing Jiang
core   +1 more source

Amino acid adjacency matrix.

open access: yes, 2016
The 20×20 amino acid adjacency matrix of the given βTM protein segment is shown. The matrix elements representing the frequency of the corresponding amino acid pairs in the segment are highlighted.
Marjana Novič (158377)   +1 more
core   +1 more source

The anti-adjacency matrix of a graph: Eccentricity matrix

open access: yes, 2018
In this paper we introduce a new graph matrix, named the anti-adjacency matrix or eccentricity matrix, which is constructed from the distance matrix of a graph by keeping for each row and each column only the largest distances.
Randić, Milan   +3 more
core   +1 more source

The motif adjacency Matrix.

open access: yes, 2013
In this article, motifs are denoted by a motif specification which can be deduced from its adjacency matrix as indicated by the red arrow.
Pieter Audenaert (404604)   +5 more
core   +1 more source

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