The Harmonic and Second Zagreb Indices in Random Polyphenyl and Spiro Chains
Sign Up to like & getrecommendations! Published in 2020 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2020.1749089
Abstract: Abstract The polyphenyl chains with n hexagons are the special graphs of unbranched polycyclic aromatic hydrocarbons. The main objective of this study is to find the expected values of the harmonic and second Zagreb indices… read more here.
Keywords: zagreb indices; spiro chains; polyphenyl spiro; second zagreb ... See more keywords
On the reduced second Zagreb index of trees
Sign Up to like & getrecommendations! Published in 2017 at "Asian-european Journal of Mathematics"
DOI: 10.1142/s179355711750084x
Abstract: The current note is devoted to investigate the trees, which maximize or minimize the reduced second Zagreb index among all n-vertex trees with fixed number of segments. This note also involves development of some results,… read more here.
Keywords: reduced second; index; second zagreb; zagreb index ... See more keywords