Results 141 to 150 of about 29,276 (167)

New lower bounds for the second variable Zagreb index

Journal of Combinatorial Optimization, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Álvaro Martínez-Pérez, José M. Rodríguez   +1 more
openaire   +3 more sources

On the first variable Zagreb index

2017
Summary: The first variable Zagreb index of graph \(G\) is defined as \(M_1^\lambda(G)=\sum_{x\in V(G)}d(v)^{2\lambda}\), where \(\lambda\) is a real number and \(d(v)\) is the degree of vertex \(v\). In this paper, some upper and lower bounds for the distribution function and expected value of this index in random increasing trees (recursive trees ...
Moradian, K., Kazemi, R., Behzadi, M.
openaire   +1 more source