2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105829A review of the calculation of the leading three-loop electroweak corrections to the rho-parameter, sin^2 theta_eff and the W-boson mass is presented. The heavy Higgs mass expansion and the renormalization are discussed.10 pages, 5 figures, latex, presented at the XXIX Conference of Theoretical Physics: Matter to the Deepest, Ustron, Poland, 8-14 September 2005High Energy Physics - PhenomenologyThree-loop electroweak corrections to the rho-parameter, sin^2 theta_eff and the W-boson mass in the large Higgs mass limittext