Abstract
We consider the following problem: Given positive integers k and D, what is the maximum diameter of the graph obtained by deleting k edges from a graph G with diameter D, assuming that the resulting graph is still connected. For undirected graphs G we prove an upper bound of (k+1)D and a lower bound of (k+1)D-k for even D and of (k+1)D-2k+2 for odd D≥3. For directed graphs G, the bounds depend strongly on D: for D=1 and D=2 we derive exact bounds of θ (√k) and of 2k+2, respectively, while for D≥3 the resulting diameter is in general unbounded in terms of k and D.
The work of this author was supported by the Foundation for Computer Science (SION) of the Netherlands Organization for the Advancement of Pure Research (ZWO).
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© 1987 Springer-Verlag Berlin Heidelberg
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Schoone, A.A., Bodlaender, H.L., van Leeuwen, J. (1987). Improved diameter bounds for altered graphs. In: Tinhofer, G., Schmidt, G. (eds) Graph-Theoretic Concepts in Computer Science. WG 1986. Lecture Notes in Computer Science, vol 246. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-17218-1_61
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DOI: https://doi.org/10.1007/3-540-17218-1_61
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