Zikai Tang

activity

20122024

most citedOn a Conjecture of Randić Index and Graph Radius

2 citations · 5 across the 7 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

math.CO2021★ 1 cited

On the vertex-degree based invariants of digraphs

Hanyuan Deng, Jiaxiang Yang, Zikai Tang +2

Let $D = (V, A)$ be a digraphs without isolated vertices. A vertex-degree based invariant $I (D)$ related to a real function $φ$ of $D$ is defined as a summation over all arcs, $I(D) =…

math.CO2021

Leap eccentric connectivity index of some graph operations with subdivided edges

Ling Song, Zikai Tang

The leap eccentric connectivity index of $G$ is defined as $L ξ^{C} (G) = v \in V (G) \sum d_{2} (v ∣ G) e (v ∣ G)$ where $d_{2} (v ∣ G)$ be the second degree of the vertex $v$ and $e (v ∣ G)$ be…

math.CO2021★ 2 cited

On the first three minimum Mostar indices of tree-like phenylenes

Hechao Liu, Lihua You, Hanlin Chen +1

Let $G = (V_{G}, E_{G})$ be a simple connected graph with its vertex set $V_{G}$ and edge set $E_{G}$ . The Mostar index $M o (G)$ was defined as $Mo(G)=\sum\limits_{e=uv\in E(G)}|n_{u…