29 citations · 32 across the 6 of their papers we have counts for
Showing 2026 · math.COShow all
3 papers · 2 filters
math.CO2026
On the sum of the two largest eigenvalues of the curl-curl operator on graphs
Yueli Han, Lu Lu, Jianfeng Wang
The Grone--Merris conjecture, proved by Bai in~2011, states that the spectrum of the graph Laplacian is majorized by the conjugate of…
math.CO2026
Helmholzian Spectra of Graphs: Novel Properties
Lu Lu, Yongtang Shi, Zoran Stanić +2
Let $\grad$, $\curl$, and $\dv$ be the graph-theoretic analogues of the gradient, curl, and divergence operators from multivariate calculus. The graph Laplacian $-\dv \grad$ gives…
math.CO2026
Helmholzian spectra of graphs: basic properties
Lu Lu, Yongtang Shi, Zoran Stanić +2
The Helmholtzian matrix of a graph is a graph-theoretic analogue of the vector Laplacian (or Helmholtz operator) [S. Li, L. Lu, J.F. Wang, A graph discretization of…