Department of Mathematics, Hong Kong Institute of Education, Tai Po, Hong Kong, e-mail: kkpoon@ied.edu.hk
Abstract: In this paper, we improve the result by Harper on the lower bound of the bandwidth of connected graphs. In addition, we prove that considerating the interior boundary and the exterior boundary when estimating the bandwidth of connected graphs gives the same results.
Keywords: graphs, bandwidth, interior boundary, exterior boundary
Classification (MSC 2000): 05C78
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