Si-Yang Huang

collaborators

3 papers

math.CO2026

Sharp $A_{I^} \pm$ -Spectral Conditions for Odd $[1, b]$ -Factors When $I^\pm > 1/2$

Silin Huang

We solve, for all sufficiently large even orders, the problem proposed by Chen et al. on sharp $A_{I^} \pm$ -spectral conditions for the existence of odd $[1, b]$ -factors when $I^\pm > 1/2$ . Ch…

math.CO2026

On the Extremal Energy of Complex Unit Gain Dumbbell Graphs

Silin Huang, Kevin Pereyra

We study the extremal energy problem for complex unit gain graphs whose underlying graph is the dumbbell graph $D_{r, s, ℓ}$ . Using switching equivalence, we reduce the spectrum t…

math.CO2026

New Bounds for the Spectral Radius and Low Energy of the $A_{I^} \pm$ -Matrix of Digraphs

Silin Huang

The $A_{I^} \pm$ -matrix of a digraph $D$ is defined as a linear convex combination $I^\pm Deg (D) + (1 - I^\pm) A (D)$ of the adjacency matrix $A (D)$ and the diagonal out-degree matrix…

Sharp AI^​±-Spectral Conditions for Odd [1,b]-Factors When I^±>1/2

On the Extremal Energy of Complex Unit Gain Dumbbell Graphs

New Bounds for the Spectral Radius and Low Energy of the AI^​±-Matrix of Digraphs

Sharp $A_{I^} \pm$ -Spectral Conditions for Odd $[1, b]$ -Factors When $I^\pm > 1/2$

New Bounds for the Spectral Radius and Low Energy of the $A_{I^} \pm$ -Matrix of Digraphs