2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77614This is a brief survey of certain constants associated with random lattice models, including self-avoiding walks, polyominoes, the Lenz-Ising model, monomers and dimers, ice models, hard squares and hexagons, and percolation models.14 pages, 5 figures, submitted to Annals of Combinatorics special issue on Statistical Mechanics and CombinatoricsCombinatoricsStatistical MechanicsHigh Energy Physics - LatticeMathematical Physics05A15; 05A16; 05B50; 11Y60; 82B20; 82B41text