Results 111 to 120 of about 963 (204)

Solutions of Detour Distance Graph Equations. [PDF]

open access: yesSensors (Basel), 2022
Prabha SC   +7 more
europepmc   +1 more source

On Unicyclic Ramsey (mK2, P3)−Minimal Graphs

open access: yes, 2015
Ramsey minimal graph is one of growing topics in Ramsey theory. The search of Ramsey minimal graphs for a combination of graphs G and H is an interesting and difficult problem.
Baskoro, Edy Tri   +3 more
core   +1 more source

The determinant of a unicyclic graph’s neighborhood matrix

open access: yesLinear Algebra and its Applications, 2005
Let \(G\) be a unicyclic graph with \(n\) vertices and a unique cycle, \(A(G)\) denotes the adjacency matrix of the graph \(G\). The algorithm for computing the determinant function of the matrix \(\alpha I_n+A(G)\) which uses \(O(n)\) arithmetic operations under some restrictions on the degrees of the vertices of the graph \(G\) is obtained. Among the
openaire   +2 more sources

A note on the minimum reduced reciprocal Randic index of n-vertex unicyclic graphs

open access: yesKuwait Journal of Science, 2017
Recent studies show that the reduced reciprocal Randi? (RRR) index possesses the second-best correlating ability amongthe several well known topological indices.
Akbar Ali, Akhlaq A. Bhatti
doaj  

The minimum matching energy of unicyclic graphs with fixed number of vertices of degree two

open access: yesOpen Mathematics
The number of jj-matchings in a graph HH is denote by m(H,j)m\left(H,j). If for two graphs H1{H}_{1} and H2{H}_{2}, m(H1,j)≥m(H2,j)m\left({H}_{1},j)\ge m\left({H}_{2},j) for all jj, then we write H1≽H2{H}_{1}\succcurlyeq {H}_{2}.
Bai Yongqiang, Ma Hongping, Zhang Xia
doaj   +1 more source

Conjugated tricyclic graphs with maximum variable sum exdeg index. [PDF]

open access: yesHeliyon, 2023
Rizwan M, Bhatti AA, Javaid M, Shang Y.
europepmc   +1 more source

On the spectral radius of atom-bond maximum degree-based sum-connectivity matrix and its applications as molecular descriptors

open access: yesKuwait Journal of Science
matrices have been extensively studied. One of the modified versions of Randić index is the index 𝑅′ (𝐺) = ∑ 𝑣𝑖∼𝑣𝑗 1 / max{𝑑𝑖 , 𝑑𝑗 } , where 𝑑𝑖 and 𝑑𝑗 are the vertex degrees of 𝑣𝑖 and 𝑣𝑗 , respectively.
B.R. Rakshith   +2 more
doaj   +1 more source

The partition dimension of the vertex amalgamation of some cycles. [PDF]

open access: yesHeliyon, 2022
Hasmawati   +4 more
europepmc   +1 more source

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