Abstract
ABSTRACT For a simple connected graph G of order n, we obtain the distance signless Laplacian spectrum of the joined union of regular graphs in terms of their adjacency spectrum and the spectrum of an auxiliary matrix. As a consequence, we obtain the distance signless Laplacian spectrum of the zero divisor graphs of finite commutative rings for some values of n. We show that is not in general distance signless Laplacian integral for , where p is any prime and Also, we find the spectrum of for certain values of z.
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