2 papers
math.CO2025
On the maximum spectral radius of planar graphs
Guanglong Yu, Lin Sun
This paper investigates the maximum spectral radius of planar graphs with concrete fixed number of vertices, providing some tight bounds on the maximum spectral radius of general p…
math.RA2024
On Bott--Samelson rings for Coxeter groups
Tao Gui, Lin Sun, Shihao Wang +1
We study the cohomology ring of the Bott--Samelson variety. We compute an explicit presentation of this ring via Soergel's result, which implies that it is a purely combinatorial i…