Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Bhatti, Akhlaq A."'
Let $G$ be a graph. Denote by $d_x$, $E(G)$, and $D(G)$ the degree of a vertex $x$ in $G$, the set of edges of $G$, and the degree set of $G$, respectively. This paper proposes to investigate (both from mathematical and applications points of view) t
Externí odkaz:
http://arxiv.org/abs/2302.11099
Let $G$ be a graph with edge set $E(G)$. Denote by $d_w$ the degree of a vertex $w$ of $G$. The sigma index of $G$ is defined as $\sum_{uv\in E(G)}(d_u-d_v)^2$. A connected graph of order $n$ and size $n+k-1$ is known as a connected $k$-cyclic graph.
Externí odkaz:
http://arxiv.org/abs/2207.04101
Publikováno v:
In Heliyon 30 May 2024 10(10)
The Wiener polarity index $W_p$, one of the most studied molecular structure descriptors, was devised by the chemist Harold Wiener for predicting the boiling points of alkanes. The index $W_p$ for chemical trees (chemical graphs representing alkanes)
Externí odkaz:
http://arxiv.org/abs/2007.12930
Publikováno v:
MATCH Commun. Math. Comput. Chem. 84 (2020) 513-534
Let $\mathcal{CT}_{n,k}$ and $\mathcal{CT}^*_{n,b}$ be the classes of all $n$-vertex chemical trees with $k$ segments and $b$ branching vertices, respectively, where $3\le k\le n-1$ and $1\le b< \frac{n}{2}-1$. The solution of the problem of finding
Externí odkaz:
http://arxiv.org/abs/1911.09866
Publikováno v:
Utliltas Mathematica 117, (2020) 139-146
The modified Albertson index, denoted by $A\!^*\!$, of a graph $G$ is defined as $A\!^*\!(G)=\sum_{uv\in E(G)} |(d_{u})^{2}- (d_{v})^{2}|$, where $d_u$, $d_v$ denote the degrees of the vertices $u$, $v$, respectively, of $G$ and $E(G)$ is the edge se
Externí odkaz:
http://arxiv.org/abs/1902.01809
Publikováno v:
In Discrete Applied Mathematics 30 January 2023 325:58-62
Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena April 2022 157
Autor:
Ali, Akbar, Albalahi, Abeer M., Alanazi, Abdulaziz M., Bhatti, Akhlaq A., Alraqad, Tariq, Saber, Hicham, Attiya, Adel A.
Publikováno v:
Mathematics (2227-7390); Dec2024, Vol. 12 Issue 23, p3806, 14p
Publikováno v:
In Arabian Journal of Chemistry January 2022 15(1)