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math.CO2016★ 4 cited
New Existence and Nonexistence Results for Strong External Difference Families
Jingjun Bao, Lijun Ji, Ruizhong Wei +1
In this paper, we use character-theoretic techniques to give new nonexistence results for -strong external difference families (SEDFs). We also use cyclotomic classes to…
math.CO2016
Distance and distance signless Laplacian spread of connected graphs
Lihua You, Liyong Ren, Guanglong Yu
For a connected graph on vertices, recall that the distance signless Laplacian matrix of is defined to be , where …