Abstract
We study majorants (minorants) for the classes of n-vertex diameter d graphs, that is, the extremal graphs on which the sharp upper (lower) bounds are attained for the number of distinct radius i balls for every i ≥ 0. We explicitly describe the minorants for all values of n and d, determine when the class of n-vertex diameter d graphs contains majorants, and describe these extremal graphs.
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Original Russian Text © T.I. Fedoryaeva, 2013, published in Diskretnyi Analiz i Issledovanie Operatsii, 2013, Vol. 20, No. 1, pp. 58–76.
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Fedoryaeva, T.I. Majorants and minorants for the classes of graphs with fixed diameter and number of vertices. J. Appl. Ind. Math. 7, 153–165 (2013). https://doi.org/10.1134/S199047891302004X
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DOI: https://doi.org/10.1134/S199047891302004X