36 citations · 67 across the 30 of their papers we have counts for
6 papers · 1 filter
A conjecture on the primitive degree of Tensors
Pingzhi Yuany, Zilong He, Lihua You
In this paper, we prove: Let A be a nonnegative primitive tensor with order m and dimension n. Then its primitive degree R(A)\leq (n-1)^2+1, and the upper bound is sharp. This conf…
On the similarity of Tensors
Pingzhi Yuan, Lihua You
Let be the set of all matrices which have the same zero patterns with some permutation matrix of order . In this paper, we prove the following result: Let $\mathb…
Further results on the nullity of signed graphs
Yu Liu, Lhua You
The nullity of a graph is the multiplicity of the eigenvalues zero in its spectrum. A signed graph is a graph with a sign attached to each of its edges. In this paper, we obtain th…
Some sharp bounds on the distance signless Laplacian spectral radius of graphs
Wenxi Hong, Lihua You
M. Aouchiche and P. Hansen proposed the distance Laplacian and the distance signless Laplacian of a connected graph [Two Laplacians for the distance matrix of a graph, LAA 439 (201…
Notes on the sum of powers of the signless Laplacian eigenvalues of graphs
Lihua You, Jieshan Yang
For a graph and a non-zero real number , the graph invariant is the sum of the power of the non-zero signless Laplacian eigenvalues of . In this paper,…
On a conjecture for the signless Laplacian eigenvalues
Lihua You, Jieshan Yang
Let be a simple graph with vertices and edges, and be the signless Laplacian eigenvalues of Let $S_k^+(G)=\sum_{i=…