Zobrazeno 1 - 10
of 5 235
pro vyhledávání: '"Complete graph"'
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 32, Iss 2, Pp 53-84 (2024)
Let G and H be two graphs, each one of them being a path, a cycle or a star. In this paper, we determine the b-chromatic number of every subdivision-vertex neighbourhood corona G ⊡ H or G ⊡ Kn, where Kn is the complete graph of order n. It is als
Externí odkaz:
https://doaj.org/article/1eb4d4ac9e2e4c60a0eadda80c9eb418
Autor:
Mei Feng Liu, Boo Hui Ling
Publikováno v:
Journal of Engineering Technology and Applied Physics, Vol 6, Iss 1, Pp 82-90 (2024)
Mathematical modelling based on the compartmental Susceptible – Exposed – Infected - Recovered (SEIR) model is proposed in this paper to study the pandemic outbreak. In addition, simulations from both the deterministic approach as well as the sto
Externí odkaz:
https://doaj.org/article/af61dee901ea473cbf8e2304a25aadbe
Publikováno v:
Axioms, Vol 13, Iss 8, p 565 (2024)
A signed graph Σ=(G,σ) consists of an underlying graph G=(V,E) with a sign function σ:E→{−1,1}. Let A(Σ) be the adjacency matrix of Σ and λ1(Σ) denote the largest eigenvalue (index) of Σ. Define (Kn,H−) as a signed complete graph whose
Externí odkaz:
https://doaj.org/article/961716a4bd5043e19d32648588823032
Autor:
Latha S, Sandhya SS
Publikováno v:
Ratio Mathematica, Vol 51, Iss 0 (2024)
Mean labeling is one of the best-known labeling methods for graphs. Despite the large number of papers published on the subject of graph labeling, there are some particular formulas to be used by researchers to mean-label graphs. In this paper, we in
Externí odkaz:
https://doaj.org/article/b818a8f3a69c4ed1a6de4877bc3ad9ec
Publikováno v:
Axioms, Vol 13, Iss 7, p 427 (2024)
The crossing number of a graph is a significant measure that indicates the complexity of the graph and the difficulty of visualizing it. In this paper, we examine the crossing numbers of join products involving the complete graph K5 with discrete gra
Externí odkaz:
https://doaj.org/article/14a5de67422b4f41a91ba775461348e3
Publikováno v:
Dynamics, Vol 3, Iss 2, Pp 272-281 (2023)
Ramsey theory constitutes the dynamics of mechanical systems, which may be described as abstract complete graphs. We address a mechanical system which is completely interconnected by two kinds of ideal Hookean springs. The suggested system mechanical
Externí odkaz:
https://doaj.org/article/6aaeff25e0da42cfb49e088b18ce2a06
Autor:
Fida Moh'd, Mamoon Ahmed
Publikováno v:
AIMS Mathematics, Vol 8, Iss 1, Pp 1040-1054 (2023)
Let R be a ring with unity. In this paper, we introduce a new graph associated with R called the simple-intersection graph of R, denoted by GS(R). The vertices of GS(R) are the nonzero ideals of R, and two vertices are adjacent if and only if their i
Externí odkaz:
https://doaj.org/article/d688d62773024e0d975daa74224d0717
Publikováno v:
Heliyon, Vol 9, Iss 7, Pp e17001- (2023)
The total energy of a conjugated molecule's π-electrons is a quantum-theoretical feature that has been known since the 1930s. It is determined using the Huckel tight-binding molecular orbital (HMO) method. In 1978, a modified definition of the total
Externí odkaz:
https://doaj.org/article/f67b2406769249a3a4c5b779508f49c7
Autor:
Reza Nikandish
Publikováno v:
پژوهشهای ریاضی, Vol 8, Iss 4, Pp 238-255 (2022)
Let R be a commutative ring with identity and Nil(R) be the set of nilpotent elements of R. The nil-graph of ideals of R is defined as the graph AG_N(R) whose vertex set is {I:(0)and there exists a non-trivial ideal such that and two distinct vertice
Externí odkaz:
https://doaj.org/article/df9de63c477944aaa00fb1fbba2394cb