2 papers
math.CO2026
On the existence of neutral graph
Fei Ma
Graph is considered neutral if its assortativity coefficient is equal to zero. In this paper, we address an outstanding conjecture, i.e., whether is there a neutral graph on $n…
math.HO2025
Topological Structures of Sets and their Subsets
Fei Ma, Bing Yao
For real application and theoretical investigation of ordinary hypergraphs and non-ordinary hypergraphs, researchers need to establish standard rules and feasible operating methods…