3 papers
math.CO2026
Characterizing -minimizer graphs: given order and independence number
Jiaqi Zhang, Shuchao Li
For a given graph \( G \), let \( A(G) \), \( Q(G) \), and \( D(G) \) denote the adjacency matrix, signless Laplacian matrix, and diagonal degree matrix of \( G \), respectively. T…
math.CO2025
Spectral extrema of graphs with fixed size: forbidden a fan graph, friendship graph or theta graph
Shuchao Li, Sishu Zhao, Lantao Zou
It is well-known that the Brualdi-Hoffman-Turán-type problem inquiries about the maximum spectral radius \( λ(G) \) of an \( F \)-free graph \( G \) with \( m \) edges. Let \( θ…
math.CO2024
Spectral extremal results on the -spectral radius of graphs without -minor
Xingyu Lei, Shuchao Li
An important theorem about the spectral Turán problem of was largely developed in separate papers. Recently it was completely resolved by Zhai and Lin [J. Comb. Theory,…