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Entropy measures of distance matrix [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Bonchev and Trinajstic defined two distance based entropy measures to measure the molecular branching of molecular graphs in 1977 [Information theory, distance matrix, and molecular branching, J. Chem. Phys., 38 (1977), 4517–4533]. In this paper we use these entropy measures which are based on distance matrices of graphs.
Bünyamin Şahin, Abdulgani Şahin
doaj   +5 more sources

Product distance matrix of a graph and squared distance matrix of a tree [PDF]

open access: yesApplicable Analysis and Discrete Mathematics, 2013
Let G be a strongly connected, weighted directed graph. We define a product distance ?(i,j) for pairs i,j of vertices and form the corresponding product distance matrix. We obtain a formula for the determinant and the inverse of the product distance matrix.
BAPAT, RB, SIVASUBRAMANIAN, S
openaire   +3 more sources

Factoring distance matrix polynomials

open access: yesDiscrete Mathematics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Collins, Karen L., Karen L. Collins
openaire   +2 more sources

A q-analogue of the distance matrix of a tree

open access: yesLinear Algebra and its Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bapat, R.B., Lal, A.K., Pati, Sukanta
openaire   +2 more sources

ON DETERMINING THE DISTANCE SPECTRUM OF A CLASS OF DISTANCE INTEGRAL GRAPHS [PDF]

open access: yesJournal of Algebraic Systems, 2023
The distance eigenvalues of a connected graph $G$ are the eigenvalues of its distance matrix‎‎$D(G)$‎. ‎A graph is called distance integral if all of its‎‎distance eigenvalues are integers.‎‎Let $n$ and $k$ be integers with $n>2k‎, ‎k\geq1$‎.
Seyed M. Mirafzal, R. Kogani
doaj   +1 more source

A Distance-Preserving Matrix Sketch

open access: yesJournal of Computational and Graphical Statistics, 2022
38 pages, 13 ...
Leland Wilkinson, Hengrui Luo
openaire   +2 more sources

On the rank of the distance matrix of graphs

open access: yesApplied Mathematics and Computation, 2022
17 pages, 2 ...
Ezequiel Dratman   +3 more
openaire   +4 more sources

Analysis of amino acids network based on transition and transversion mutation of codons [PDF]

open access: yesNetwork Biology, 2021
In this paper, we have developed a network of 20 amino acids based on a distance matrix of amino acids. This distance matrix is obtained by considering the transition and transversion mutation of codons.
Tazid Ali, Chandra Borah
doaj  

Squared distance matrices of trees with matrix weights

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
Let T be a tree on n vertices whose edge weights are positive definite matrices of order s. The squared distance matrix of T, denoted by Δ, is the ns × ns block matrix with [Formula: see text], where d(i, j) is the sum of the weights of the edges in the ...
Iswar Mahato, M. Rajesh Kannan
doaj   +1 more source

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