Results 31 to 40 of about 3,633,781 (192)
Heliyon, 2023 A independent edge set of G containing mutually independent edges is also called a matching of G. The total numbers of matchings and independent sets of a graph G, namely, the Hosoya index and the Merrifield-Simmons index, respectively, are two important
Lina Wei, Hong Bian, Haizheng Yu
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Zeitschrift für Naturforschung A, 1987 Some inequalities for Hosoya's topological index are deduced, revealing its dependence on the structure of the carbon-atom sekeleton of a hydrocarbon molecule.
I. Gutman, J. Cioslowski
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COMPARISON OF THE EFFECTS OF MANURE-BASED PRODUCT AND AMMONIUM NITRATE ON MAIZE (ZEA MAYS L.) [PDF]
Natural Resources and Sustainable Development, 2022 The storage and application of huge amounts of deep litter manure could be a serious issue generated by livestock systems. As broiler litter has high N and fiber content, pre-treatment is strongly recommended. Composting is one of the key method of pre-
Nagy Attila +5 more
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Approximate Formulas for Hosoya’s Topological Index [PDF]
Bulletin of the Chemical Society of Japan, 1987 Abstract Approximate formulas for Hosoya’s topological index (Z) are reported for the first time. These formulas reproduce In Z with an error of some 1–2% and require the knowledge of only a few easily obtainable invariants of the molecular graph.
Ivan Gutman, Zoran Markovic
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Distance-Based Polynomials and Topological Indices for Hierarchical Hypercube Networks
Journal of Mathematics, 2021 Topological indices are the numbers associated with the graphs of chemical compounds/networks that help us to understand their properties. The aim of this paper is to compute topological indices for the hierarchical hypercube networks. We computed Hosoya
Tingmei Gao, Iftikhar Ahmed
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Hosoya, Schultz, and Gutman Polynomials of Generalized Petersen Graphs Pn,1 and Pn,2
Journal of Mathematics, 2023 The graph theory has wide important applications in various other types of sciences. In chemical graph theory, we have many topological polynomials for a graph G through which we can compute many topological indices.
Ramy Shaheen +2 more
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Computing the hosoya and the merrifield-simmons indices of two special benzenoid systems [PDF]
, 2021 Gutman et al. gave some relations for computing the Hosoya indices of two special benzenoid systems R-n and P-n. In this paper, we compute the Hosoya index and Merrifield-Simmons index of R-n and P-n, by means of introducing four vectors for each ...
Öz, Mert Sinan, Cangül, İsmail Naci
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Trees with m-matchings and the fourth and fifth minimal Hosoya index [PDF]
, 2008 We study the Hosoya index of trees with m-matchings and characterize the trees with m-matchings and the fourth and fifth minimal Hosoya index ...
Ye, Chengfu, Wang, Jianfeng
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Hosoya Polynomials of Power Graphs of Certain Finite Groups
Molecules, 2022 Assume that G is a finite group. The power graph P(G) of G is a graph in which G is its node set, where two different elements are connected by an edge whenever one of them is a power of the other.
Bilal Ahmad Rather +3 more
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The smallest Hosoya index of unicyclic graphs with given diameter [PDF]
, 2012 The Hosoya index of a (molecular) graph is defined as the total number of the matchings, including the empty edge set, of this graph. Let ${\cal{U}}_{n,d}$ be the set of connected unicyclic (molecular) graphs of order n with diameter d. In this paper we
Xu, Kexiang
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