2 papers
math.CO2026
Degree sequences realizing labelled -factors
Zhen Liu, Qinghou Zeng
For a positive integer \( k \), let \( [k] = \{1, 2, \ldots, k\} \). Let \( h \) be a non-negative integer, and let \( n \) be a multiple of \( h + 1 \). Define \( H \) as the disj…
math.CO2026
Paths of length five with equal-degree endpoints
Zhen Liu, Qinghou Zeng
Addressing a question posed by ErdÅs and Hajnal, Chen and Ma proved that, for all , the complete bipartite graph is the unique graph on vertices with…