2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28400We summarize ideas and methods that apply to rigidity and connectivity percolation. These include: constraint counting concepts, exact calculations on diluted trees and numerical results on diluted lattices using matching algorithms. The similarities and differences between connectivity and rigidity percolation are discussed.11 pages, LaTeX, psfig embedded figuresStatistical MechanicsMaterials Sciencetext