2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115621Using a generating function approach, the correlation coefficients of four different graph-theoretical indices, namely the number of independent vertex subsets, the number of matchings, the number of subtrees and the Wiener index, are asymptotically determined for random rooted ordered trees.16 pages; for associated Mathematica files, see http://finanz.math.tugraz.at/~wagner/CorrelationCombinatorics05A16 (Primary); 05C30 (Secondary)text