Novel neighbourhood redefined first and second Zagreb indices on carborundum structures

On Computation of Degree-Based Entropy of Planar Octahedron Networks

“…In other words, it is the information obtained by learning the values of some unknown variables. Entropy has many applications in information theory as information entropy, in chemistry as thermodynamic entropy, and in graph theory as graph entropy [8][9][10][11][12][13][14][15][16]. In general, entropy is defined as the following: Let x be a discrete random variable and x ∈ X and p be the probability distribution of set X.…”

Novel Degree-Based Topological Descriptors of Carbon Nanotubes

“…is structure is formed by 4 carbon atoms forming a rhombus that are linearly bridged by edges whose sequence looks like 4 rhombuses connected by 4 edges row and column wise resulting in an alternating pattern of rhombuses and octagons and is represented as 8. 2a + 2b − 4 (8,9) 4a + 4b − 8 (9,9) 12ab − 14a − 14b + 16…”

“…From the last two decades, topological indices (TIs) are identified and used in pharmacological medicine, bioinorganic chemistry, toxicity, and theoretical chemistry and are also used for correlation analysis [7][8][9][10][11].…”

“…(5,8) 4b − 4 (6, 7)4a − 4 (6, 8) 4a − 4 (7, 9) 2a(8,8) 2a + 2b − 4(8,9) 4a + 4b − 8(9,9) 15ab − 18a − 14b + 16Journal of Chemistry…”

Cyclohexane based isomers discrimination using topological indices

“…Structural isomers are molecules with same structural formula but with different atomic organisation pattern where stereoisomers are molecules in which molecular bonds are of same order but with different spatial arrangements. Topological index is a numerical descriptor or a number depicting the chemical structure [1,2,15,16]. There are two types of topological indices called degree based and distance based topological indices.…”