Xin Shi

collaborators

2 papers

math.CO2026

Spectral extremal graphs for even factors

Zeyuan Wu, Hongzhang Chen, Xinting Shi +1

An even factor of a graph $G$ is a spanning subgraph in which every vertex has positive even degree. It is known that the minimum degree $I^´ (G) \geq 2$ is a trivial necessary conditi…

math.SP2025

A new characterization of symmetric $H^{+}$ -tensors and $M$ -tensors

Xin Shi, Luis F. Zuluaga

In this work, we present a new characterization of symmetric $H^{+}$ -tensors. It is known that a symmetric tensor is an $H^{+}$ -tensor if and only if it is a generalized diagonally dom…

Spectral extremal graphs for even factors

A new characterization of symmetric H+-tensors and M-tensors

A new characterization of symmetric $H^{+}$ -tensors and $M$ -tensors