2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/58323Using matrix model techniques for the counting of planar Feynman diagrams, recent results of Sundberg and Thistlethwaite on the counting of alternating tangles and links are reproduced.17 pages, 6 figures, to appear in the proceedings of the 11th International Conference on Formal Power Series and Algebraic Combinatorics, Barcelona June 1999Mathematical PhysicsHigh Energy Physics - TheoryCombinatoricstext