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math.CO2026
Optimal connectivity of second order iterated line graphs
Run Zou, Wei Xiong, Mingquan Zhan +1
The line graph of a graph is defined to be the simple graph whose vertices are the edges of , where two vertices in are adjacent if and only if the correspondi…
math.CO2019
Extra-factorial sum: a graph-theoretic parameter in Hamiltonian cycles of complete weighted graphs
V. Papadinas, W. Xiong, N. A. Valous
A graph-theoretic parameter, in a form of a function, called the extra-factorial sum is discussed. The main results are presented in ref. [1] (Nastou et al., Optim Lett, 10, 1203-1…