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Artículo original: https://doi.org/10.1007/s10114-017-6324-y (actividad AR/0000020598) The original version of the article was published in . Unfortunately, the original version of this article contains a mistake: in Theorem 6.2 appears that (n, ) = (n-+5)/4 but the correct statement is (n, ) = (n - + 4)/4. In this erratum we correct the theorem and give the correct proof.
extremal problems on graphs; diameter; minimum degree; maximum degree; gromov hyperbolicity; hyperbolicity constant; finite graphs