Results 101 to 110 of about 1,607 (200)

On Sombor index and graph energy of some chemically important graphs

Examples and Counterexamples
Sombor index of a graph G=(V(G),E(G)) is provided by the expression ∑uv∈E(G)du2+dv2, where dx is the degree of the vertex x∈V(G). The energy of a graph is the quantity given by the total of the absolute values of its adjacency matrix’s eigenvalues.
Md Selim Reja, Sk. Md. Abu Nayeem
doaj   +1 more source

The Euler Sombor Index and the Average Sombor Index of the Cozero-Divisor Graph over the Ring ℤ_n

Mathematics
Let Z(R)′ denote the set of all elements in the ring R that are neither zero nor units, where R is assumed to be a commutative ring with a multiplicative identity satisfying 1≠0.
Amal S. Alali, Muzibur Rahman Mozumder, Mohd Salman Ali   +2 more
doaj   +1 more source

Sombor index of uniform hypergraphs

AIMS Mathematics
<p>In 2021, Gutman proposed a topological index for graphs known as the Sombor index. In this paper, we obtain several upper and lower bounds of the Sombor index of uniform hypergraphs, including those of hypertrees. Furthermore, we present a Nordhaus-Gaddum type result for the Sombor index of uniform hypergraphs.</p>
Xiuwen Wang, Maoqun Wang
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On the Sombor index of graphs [PDF]

Contributions to Mathematics, 2021
Tamas Reti, Tomislav Doslic
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Relating graph energy and Sombor index [PDF]

Discrete Mathematics Letters, 2021
Alper Ulker, Arif Gursoy, Necla Kırcalı Gursoy, Ivan Gutman   +3 more
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Sombor index and its applications

Open Journal of Discrete Applied Mathematics
A novel topological index, the Sombor index, has been proposed by Ivan Gutman in a recent paper [1]. Motivated by this novel index, we study the new variants of Sombor index and to examine the correlation of newly introduced topological indices we have computed the values of these indices by taking all possible trees on 10 vertices. Here in this paper,
Vijaylaxmi S. Shigehalli, Sammed A. Chougale   +1 more
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Centrality-Based Sombor Index for Network Systems with Applications to Molecular Chemistry and Disease Transmission Networks

Transactions on Fuzzy Sets and Systems
A number is a graphical invariant in graph theory if it is invariant under graph automorphism. In molecular graph theory, graphical invariants are known as topological indices.
Shaikh Ibrahim Abdullah, Maryam Alkandari, Kajal De, Mislav Balkovic   +3 more
doaj  

„Akit A Sors Kiemelt A Többi Festő Közül” Schervitz Mátyás (†1771) Budai Festő Oltárképei [PDF]

, 2015
Korhecz Papp, Zsuzsanna
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Predicting tuberculosis drug properties using extended energy based topological indices via a python driven QSPR approach

Scientific Reports
In the present work, the physicochemical characteristics of important anti-tuberculosis (TB) drugs such as isoniazid, pyrazinamide, ethambutol, ethionamide, linezolid, and levofloxacin are explored using extended energy-based topological indexes.
Kiran Naz, Hafiz Muhammad Bilal, Muhammad Kamran Siddiqui, Sarfraz Ahmad, Mustafa Ahmed Ali   +4 more
doaj   +1 more source

On the Sombor index of the total graph and the unit graph of commutative rings

In this paper, we investigate the Sombor index of the total graph and unit graph of $\mathbb{Z}_n$ which is denoted by $T_{\Gamma}(\mathbb{Z}_n)$ and $G(\mathbb{Z}_n)$ respectively for $n \in \{2k, p^{\alpha}, pq, p^2q\}$ where $p$ and $q$ are distinct ...
DSouza, Raisa, Pathak, Abhishek Vaibhav, Sachan, Anukul   +2 more
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