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k-trees and some graph operators
B. Basavanagoud,K. G. Marajkar 장전수학회 2008 Proceedings of the Jangjeon mathematical society Vol.11 No.1
In this paper, we charactrize those graphs whose plick graphs are k-trees ; k ≤ 4 and also show that plick graphs are not k-trees; k ≥ 5. Further we also characterize those graphs whose lict graphs are k-trees ; k ≥ 2 and also establish characterization for semi-total block graph to be k-tree ; k ≥ 1 and total-block graph to be k-tree ; k ≥ 2.