Results 1 to 10 of about 9,542 (190)
Enumeration of the Hosoya index of pericondensed benzenoid system [PDF]
HeliyonIn chemical graph theory, topological indices play an important role and have various uses in quantitative structure-property relationships (QSPR) as well as quantitative structure-activity relationships (QSARs).
Muhammad Talha Farooq +2 more
doaj +4 more sources
Hosoya index of tree structures [PDF]
Transactions on Combinatorics, 2020 The Hosoya index, also known as the $Z$ index, of a graph is the total number of matchings in it. In this paper, we study the Hosoya index of the tree structures.
Ramin Kazemi, Ali Behtoei
doaj +3 more sources
Linear Algorithms for the Hosoya Index and Hosoya Matrix of a Tree [PDF]
Mathematics, 2021 The Hosoya index of a graph is defined as the total number of its independent edge sets. This index is an important example of topological indices, a molecular-graph based structure descriptor that is of significant interest in combinatorial chemistry ...
Aleksander Vesel
doaj +2 more sources
Asymmetric circular graph with Hosoya index and negative continued fractions
Karpatsʹkì Matematičnì Publìkacìï, 2021 It has been known that the Hosoya index of caterpillar graph can be calculated as the numerator of the simple continued fraction. Recently in [MATCH Commun. Math. Comput. Chem.
T. Komatsu
doaj +4 more sources
Computation method of the Hosoya index of primitive coronoid systems
Mathematical Biosciences and Engineering, 2022 Coronoid systems are natural graph representations of coronoid hydrocarbons associated with benzenoid systems, but they differ in that they contain a hole.
Mert Sinan Oz, Roberto Cruz, Juan Rada
doaj +4 more sources
Certain Topological Indices of Non-Commuting Graphs for Finite Non-Abelian Groups [PDF]
Molecules, 2022 A topological index is a number derived from a molecular structure (i.e., a graph) that represents the fundamental structural characteristics of a suggested molecule.
Fawad Ali +5 more
doaj +2 more sources
Hosoya Polynomials of Power Graphs of Certain Finite Groups [PDF]
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
doaj +2 more sources
Hosoya properties of the commuting graph associated with the group of symmetries
Main Group Metal Chemistry, 2021 A vast amount of information about distance based graph invariants is contained in the Hosoya polynomial. Such an information is helpful to determine well-known distance based molecular descriptors.
Abbas Ghulam +4 more
doaj +1 more source
Non-commuting graph of the dihedral group determined by Hosoya parameters
Alexandria Engineering Journal, 2022 Hosoya introduced the concept of graph terminologies in chemistry and provide a modeling for molecules. This modeling leads to predict the chemical properties of molecules, easy classification of chemical compounds, computer simulations and computer ...
Muhammad Salman +4 more
doaj +1 more source
Hosoya polynomial of zigzag polyhex nanotorus [PDF]
Journal of the Serbian Chemical Society, 2008 The Hosoya polynomial of a molecular graph G is defined as ... , where d(u,v) is the distance between vertices u and v. The first derivative of H(G,l) at l = 1 is equal to the Wiener index of G, defined as .... . The second derivative of .... at l = 1 is
MEHDI ELIASI, BIJAN TAERI
doaj +3 more sources