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math.CO2017
Total weight choosability for Halin graphs
Yu-Chang Liang, Tsai-Lien Wong, Xuding Zhu
A proper total weighting of a graph is a mapping which assigns to each vertex and each edge of a real number as its weight so that for any edge of , $\sum_{e \i…
math.CO2017★ 1 cited
On xD-Generalizations of Stirling Numbers and Lah Numbers via Graphs and Rooks
Sen-Peng Eu, Tung-Shan Fu, Yu-Chang Liang +1
This paper studies the generalizations of the Stirling numbers of both kinds and the Lah numbers in association with the normal order problem in the Weyl algebra $W=\langle x,D|Dx-…