Tianlong Ma

collaborators

2 papers

math.CO2023

Convolution formulas for multivariate arithmetic Tutte polynomials

Tianlong Ma, Xian'an Jin, Weiling Yang

The multivariate arithmetic Tutte polynomial of arithmetic matroids is a generalization of the multivariate Tutte polynomial of matroids. In this note, we give the convolution form…

math.CO2023

Extremal trees, unicyclic and bicyclic graphs with respect to $p$ -Sombor spectral radii

Ruiling Zheng, Tianlong Ma, Xian'an Jin

For a graph $G = (V, E)$ and $v_{i} \in V$ , denote by $d_{v_{i}}$ (or $d_{i}$ for short) the degree of vertex $v_{i}$ . The $p$ -Sombor matrix $S_{p} (G)$ ( $p \neq = 0$ ) of…

Convolution formulas for multivariate arithmetic Tutte polynomials

Extremal trees, unicyclic and bicyclic graphs with respect to p-Sombor spectral radii

Extremal trees, unicyclic and bicyclic graphs with respect to $p$ -Sombor spectral radii