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- Huiqing Liu, Lu Xia Mei
- 2007

Abstract Let G = (V,E) be a simple graph of order n with V (G) = {v1, v2, . . . , vn} and degree sequence d1, d2, . . . , dn. Let ρ(G) be the largest eigenvalue of adjacency matrix of G, and let E(G)… (More)

- Lu Xia Mei, Lianzhu Zhang, Feng Tian
- 2006

The Randić index of an organic molecule whose molecular graph is G is the sum of the weights (d(u)d(v))− 1 2 of all edges uv of G, where d(u) and d(v) are the degrees of the vertices u and v in G. In… (More)

- Lu Xia Mei, Huiqing Liu, Feng Tian
- 1998

Let G be a simple connected graph of order n. The connectivity index Rα(G) of a graph G is the sum of the weights (d(u)d(v)) of all edges uv of G, where α is a real number (α 6= 0), and d(u) denotes… (More)

- Huiqing Liu, Lu Xia Mei
- 2004

The Randić index of an organic molecule whose molecular graph is G is defined as the sum of (d(u)d(v))− 1 2 over all pairs of adjacent vertices of G, where d(u) is the degree of the vertex u in G. In… (More)

- Lu Xia Mei, YU Zhengguang
- 2001

We prove a conjecture of Saito that if a graph G with ≥ 3 has no cycle of length 1 (mod 3), then G has an induced subgraph which is isomorphic to the Petersen graph. The above result strengthened the… (More)

- Lu Xia Mei, Ma Yun Fei, Zeng Tao
- Proceedings of 2011 International Conference on…
- 2011

Grid structure is a light and efficient structure. The composites have many excellent performances, such as that it can be designed excellently. This study mainly studies the grid structures with… (More)

- Huiqing Liu, Lu Xia Mei
- 2007

Abstract Many chemical indices have been invented in theoretical chemistry, such as Wiener index, Merrifield-Simmons index, Hosoya index, spectral radius and Randić index, etc. The extremal trees and… (More)

- YU Aimei, Lu Xia Mei, Feng Tian
- 2004

Let G be a finite simple undirected graph with n vertices and m edges. For v ∈ V , the 2-degree of v is the sum of the degrees of the vertices adjacent to v. The energy of G, denoted by E(G), is… (More)

- Lu Xia Mei, D. Wachenschwanz, Michael Sung Alex, N Yeh
- IEEE International Magnetics Conference
- 1999

- Xue Yonggang, Lu Xia Mei
- 2011 Third International Conference on Multimedia…
- 2011

In order to save the resources and protect the environment, the green logistics system concerning reverse logistics was established based on the idea of the "X" model of supply chain management. The… (More)