2 papers
math.CO2025
On the Spread of Graph-Related Matrices
Lele Liu, Yi-Zheng Fan, Yi Wang +1
The spread of a real symmetric matrix is defined as the difference between its largest and smallest eigenvalue. The study of graph-related matrices has attracted considerable atten…
math.CO2025
The spectra of Laplace operators on covering simplicial complexes
Yi-Zheng Fan, Yi-Min Song, Yi Wang
We give a decomposition of the Laplace operator (in matrix form) of a covering simplicial complex as a direct sum of several matrices, one of which is the Laplace operator of the b…