Let Hn(p,q) be a tree obtained from two stars K1,p and K1,q by identifying the center of K1,p with one end of a path Pn and the center of K1,q with the other end of *** call Hn(p,p-1) a double quasi-star *** this ...
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Let Hn(p,q) be a tree obtained from two stars K1,p and K1,q by identifying the center of K1,p with one end of a path Pn and the center of K1,q with the other end of *** call Hn(p,p-1) a double quasi-star *** this paper,we show that a double quasi-star tree is determined by its Laplacian spectrum.
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